Firstly your English is very good so well done for that. No don't end relationships because of that. Much better to face it and conquer it than run away or isolate yourself and then , when you are older, regret it. If he is worth holding on to he will do everything to help you. Maybe you need to place yourself in that situation more not less. Can you get to meet him more. I'm sure that the more comfortable you feel with him the better it will get. Think WHY you are feeling like this. What's the worst that can happen when i meet him. We don't talk, he won't like me, i'll be stupid etc etc. SO WHAT. He's just a guy. Meet him as a friend . Don't put any pressure on yourself any more than that. Then if it becomes more GREAT!!! Good luck.