5. Express yourself
The quickest way to find out whether there is something suspicious going on between you and your boyfriend’s female friend is to talk to him about the problem. Let him know how you feel and ask him to explain the moments that seem to be unclear to you. Give proofs of your suspicion if any. It is absolutely normal to talk about such issues.
6. Do not pay attention
You cannot make the person disappear. However, you can always ignore those whom you dislike. Do not pay attention to your partner’s female friends. If they irritate you, never let them know about that. Be neutral, but never rude. As long as he is with you remember that you are more important to him than any other woman.
The fact is that to stay absolutely calm in this kind of situations is incredibly difficult. If a break-up with your current boyfriend is not an option, then do not be too abrupt and demanding. This will only put your boyfriend out. Are you the one who is trying to solve exactly the same problem at the moment? Let us how successful you are.