Please read, I really need advice!
Okay so, im really good friends with my ex,(Andrew) even though im still trying to get over him a little. we have a mutual friend (Isaiah) which is his best guy friend. (me being his best girl-friend) Now, his best guy friend is in my English class. I'm only friends with him because hes a close friend of my ex and we're kinda like all friends. Well anyway, everyday after English class, i walk out but Isaiah always walks next to me then Andrew comes down the steps and joins us and we all walk together. Recently, i noticed that Isaiah has been really touchy with me like, when we're walking he'll always try to tickle me or try to mess up my hair or anything really that involves his hands on me. Andrew does too sometimes but not as much. I couldn't understand why Isaiah would do that like, right in front of Andrew since we dated and everything and how much we went through. I didn't know if it bothered Andrew or if it should. since that's like his best friend. So, the other day we were all walking and Isaiah wasn't doing anything to me. Then Andrew said "go on Isaiah, pick on her" which made me mad because why would he say that? So, my question is what does this all mean? Shouldn't Andrew care that Isaiah does that? And if he doesn't, does that mean he doesn't care about me?