Is it normal to feel funny about my boyfriend and this girl from work?

Not paranoid...look through his phone and figure out what they talk about, maybe confront the girl about it.

Well i think you and the friend should talk because they are prone to tell you the truth:)

You're not being paranoid. My husband's co-worker did the same thing! I kept telling him she was after him but he told me I was paranoid too. A couple months later she was bending over in front of him, asking him to hang out, and finally confessed her affection to him. Needless to say, he told her he wasn't interested and to get lost. They still work together but he can't stand her anymore. HA!

let your boyfriend know you truly love him but you think he is being unfaithful,and if he truly loves you at all he will put your needs before some girl and stop talking to her. i run into this problem with my gf all the time,and her "gay best friend",she flirts with other guys shows her body,and adds them on skype,plus worst part is when she lies. I know i should leave her but i have tried 20 times and i cant cause i have never loved or felt for another human before. Add her as a friend if necessary and see if it bothers your bf,and try to steal her away from him,if he continues.

Your are definitely not being paranoid you should investigate.

He's into her. Probably getting close to cheating with her honestly.

You have every right to be paranoid , I agree with all the other posts that say you need to talk to him and straighten him out with this , I guarentee he wouldn't like it if you were all close and friendly with one of your male co-workers !

you are NOT being paranoid. dont let him give you that line.
same thing happened to me and my boyfriend of 3 years, he ended up cheating on me with her.
this girl is showing no respect for your relationship with your boyfriend and is weasling her way in. its very wrong of your boyfriend to do this to you, can lead to so many other problems. tell him to straighten the fuck up.

That's very out of line of him to do. First of all it's a chick and he shouldn't be giving his number to other women in the first place. He is in a relationship with you and if he respects and loves you he will delete her number and stop texting and calling her immediately. If he keeps it up leave him because it will only get worse

I just don't find this to be a big deal. Unless you have good reason not to trust him, shouldn't you give him the benefit of the doubt...?

I bet they are still "Sexting"

He may be a wonderful person making you one of the lucky few.

Then again, he may be trying to get in her pants.