why is he acting so shady and weird?! its annoying!?

[Sarah G]

okay. so yeah. my [ex]boyfriend and i dated for 4 months. no problems. then he started acting weird and cheating. i knew that he was bisexual but then he started to only talk to other guys besides me. but he told me that he was full blown gay and left me. were still friends but the day before he left me, he got a new bf. that didnt really upset me, cuz i was expecting it. but yeah. were like.. a big threesome group of friends. and he started to act shady around me AND his new bf, a good friend of mine. he knows i am bi and came into my live on stickam and started acting weird. and he wouldnt talk at all. then he asked me if i was with this girl! i was like... no? we are just friends. you know that. he was one of the girls he left me for once. and then he left. and signed off. and started acting all bitchy. 7th grade drama! with 14 year olds!its like. dude. i never want to go back there. so stop! what should i do? leave him for good?? oh and i still love him like.. true love.