Should i stop talking to a friend because of my boyfriend

This depends on who you are and what type of relationship you want.
If you are the type who caves in to her boyfriend's wishes, who gives up friendship because of his demands or feelings, and who wants a manipulative boyfriend who dictates who you can and can't be friends with, then don't talk to the guy.

If you think on your own and like to decide who you do and don't talk to, and who you can and cann't be firends with, and who wants a boyfriend who will respect your freedom and judgment and trust you, keep talking to him.

You and your "friend" have acted honorably. The boyfriend is a manipulative baby

I agree with other members who say your boyfriend is waving a red flag. You'd be wise to pay attention to it.

People who want to control who their significant other spends time with are bad news. Your boyfriend has the right to express his concerns about people you know, but he doesn't have the right to limit who you talk to. Trying to do so indicates basic immaturity and a lack of trust at the very least; it could indicate that he has a controlling personality which is much more sinister.

In this case, he has a rather pathetic justification for telling you that you shouldn't talk to this particular guy. I'd be willing to bet that if you stay with your boyfriend, sooner or later he'll start telling you that there are others you shouldn't talk to. He might be able to come up with excuses for that too, but the fact will be that he wants to eliminate from your life anyone who he thinks might be a rival for your time and attention.

I suggest you seriously consider dumping him over this. It may seem to you a trivial reason, but people like this are toxic. If you do break up with him, he'll no doubt take it very badly and you shouldn't be surprised if he accuses you of having feelings for the other guy.

It sounds to me like your "bf" is an insecure, highly jealous, control freak mommas boy. If you are going to let someone else tell you who you cannot be friends with, who will try to dictate your every action, then someday he will freak the fuck out because you don't answer his calls and you didn't respond fast enough to his texts. Then at another point in time that kind of guy will demand that do not leave your house except to go to work to support his lazy ass so he can go out and fuck around and fuck who ever he wants while you are home alone, wondering where he is and when he does come home and you question him he will yell at you to mind your own DAMN business as he starts punching the wall to scare you into submission.
So run that they your mind and see how it fits. I am a guy, I know how so Many of them think. Tell him to hit the bricks. Leave his ass. Next relationship lay the ground rules before you start getting "chummy".

He's paranoid and obviously doesn't trust you, or he'd not give a crap who you talk to. When people start controlling who you talk to, it's a huge red flag.

Talk to him. If the relationship doesn’t change from that point, dump him, Tell him why. That’s not love right there. That’s abuse. If he loves you, he would trust you.

Dump him. It won't get better even if you give in to his demands. He will just find something else to make you do. He's a controlling asshat. Tell him to piss up a rope the go out with the flirt dude.

Your boyfriend doesn’t get a say in who your friends with it’s a major red flag when a significant other is trying to control who your friends with. It also shows that he doesn’t trust you. I’d tell him that he can either trust you to handle your shit or he can be single.

The change in behavior doesn't matter, your boyfriend understands correctly that there is sexual chemistry between you and the friend, and he'd be right to oppose the two of you hanging out in private or going out drinking together. To make up for this he should support your friendship in other settings. It sounds like you're mostly encountering this other guy in a group situation, and boyfriend isn't excluded from this. If so, then he's only trying to create awkwardness out of jealousy and indeed might just be a controlling price. But if it's you and your friend and one other girl back at his place after the bar closes, while your boyfriend is at work? Then yeah he has a right to be concerned.

your boyfriend is an insecure loser that's all there is to it drop him like a bad habit.