How can I get over this..i feel so silly sometimes?

I think that you have nothing to worry about at all, talk to him. tell him how you feel about him tell him how you feel about his relationship with her, but most importantly i don't think that you should give him him the idea that it upsets you so much when he talks about her, the last thing you want is for him to start hiding his feelings and thoughts although i have a feeling that he won't anyway since he's been keeping you in the loop, which is great by the way! :) he obviously really cares about you and you mean that much to him that he feels he can open up to you. you never know he might be sometimes trying to make you a little jealous, just to see how you would react because deep down he may feelings for you! but i'm not sure on that, you know him more than i do. there is also a difference between having feelings for someone and being intrigued by someone and their lifestyle, it doesn't mean that they are in love so don't worry. why don't you take up an exciting new hobby, take him to the city with you to somewhere exciting so he can see that you have a great outgoing different personality, get a crazy gorgeous do, there is so many things.. try not to let it get to you.. focus on yourself on how beautiful and talented you are as an artist, he could be saying some of the most amazing things to other people about you.. i hope i helped good luck xox