My boyfriend was flirting with another girl right in front of me

First of all follow your gut instinct usually it is right if you sense something beleive me i know from experince i caught my guy after we had been together for 3 years and even was living together he got caught by his texting i just went onto our joint account and saw all the times he had text her, he texted her 100 times in one day so i confronted him he denyed it so i went straight to her and she confirmed it so then me and him had a huge fight he told me i was the love of his life and got down on his knees with tears in his eyes and produced a diamond i looked at the diamond and after he asked me to marry him i looked at him bent down took the ring closed the box and replied YEA I WILL TAKE THE RING BUT HELL NO I WONT TAKE YOU AND WALKED OFF LAUGHING BECAUSE I HAVE ALWAYS HEARD ONCE A CHEAT ALWAYS A CHEAT,and what makes it so funny is that i sent him a wedding invitation to my wedding because after i dropped that jerk I found my husband and I DO NOT REGRET THAT DAY I LEFT HIM ON HIS KNEES there are two many great guys out there for you to be stuck with a jerk GOOD LUCK

Very normal for you to be upset. Your gut is telling you he was cheating and the fact that he refuses to talk about it and looked embarrassed only proves it. Try to talk to him once more and if he won't speak, let him go. You deserve better.

Tell him straight up you need answers or its over. If he has nothing to hide then he should have no hesitation to talk about the event. Secondly, you are not being stupid at all, and even IF you were, it'd still be a dick move for him to call you on it instead of humoring you and comforting you like a boyfriend should. Thirdly he was so Rude to you, I;d demand an apology. So yah normal. Good luck.

Look I hate to say it but if he WAS flirting with the whore your talking about then you might have to ditch him...your saying your attractive well then that should be no problem for you.

Flirting, especially in front of your GF , is rude! The guy either doesn't care about your feelings or he is just marking time with you till he can trade up. Some immature men also need the attention of more than one female to feel secure about themselves. The more females appreciate them the higher their self-esteem. In economics there is a saying public property is nobody's property. Your BF is acting like he was public property.
I loved a guy once. He was charming, cool, popular. I so much wanted to impress him. I would do anything for him. He liked my attention, he liked everything I gave him, he liked to use me. And he never stopped flirting with other females. I was with him for over a decade ... but after many years of trying to please him I changed. In the first few years of our relationship I literally would have given my life for him. I stopped a guy with a gun from shooting him... but my dear love kept on flirting....no matter that I told him how much it hurt me. So I stopped talking. When I tried to discuss it he said that is just the way he was. Well then, this is the way I am:
He still flirts, but every time now there is a consequence. Over the years he had put on one hundred extra pounds, guess why? Over the years he has lost his job several times. Guess why? Over the years not one of his over half a dozen motorcycles is ever rideable. Guess why? I could go on and on. His payment for flirting is very high, but he needs to flirt and therefore he pays the consequences. Each and every time!
I think as he is getting older he is tiring out, only half hearted flirting now, so only half the consequences. I wonder if we will ever get to where we are both happy with each other.
I could have left him a long time ago but then I would be still seething for not leveling the playing field.
Isn't flirting fun?
I don't know if you want to give up as much of your life as I did for a flirting guy, only you can decide if it's worth it to you.

My boyfriend does the same thing... But the girl he flirts with has a boyfriend! It's very normal :) and I'm kinda depressed right now because of it but I know he loves me (<--- wierd right?

Yes its extremely disrespectful, you need to just speak from your heart beautiful you have every right to feel everything that you feel.

Are there any problems in your relationship?
Did you see this coming?
He could be untruthful about his intentions in his relationship with you. If you are looking for a serious relationship, stay away from him.
If he is acting overly defensive and avoiding the point, it could mean that he knows exactly what you're talking about....
If he can't be an adult and talk with you about it, or be honest with you, ask yourself: can this be fixed AND if so, is it even worth fixing?
Best of luck to you.

so what, go find a hot guy or chick to fuck, because everybody cheats, the problem is with you not your boyfriend, stop being a bitch and act like hes the problem when in fact you are so go out and get some!

Look, I have a friend who has been going through this for years. Please don't put yourself through it. Tell him you want to talk about it. Describe to him the events as you saw them and ask for an explanation. My friend gets cheated on on a regular basis and despite the OVERWHELMING evidence (she had emails between them!) she refuses to believe it's possible.

And if I were in this situation my husband would give me an honest answer or if the roles reversed I would give him one. Your boyfriend is trying to avoid talking about it which sends up all kinds of red flags.

Maybe she was an ex? Or an old hook-up? And that's why it was embarressing? Or he could just like her and that's why he reacted that way. Or maybe he cheated on you. Could be a million things, but you know him best so you should know better than any of us.

A year? That sounds about as long as anyone can stay on their best behavior. Maybe that's why the traditional engagement is two years (or so I've heard).
So now you know how he really feels. The next step is yours.