[warning:this is a pretti long situation and sorrie if its confusing]
heres the situation:
me and my ex broke up on june 15 [yes i still remember it

] and then he went out with one of his ex a few days after we broke up. i knew about that since i was the one who told him to [he told me he still likes her so yea..] they went out for a couple of weeks and they broke up recently. so he tells me that he still likes me and still wants to be with me. i still like him and all but i go with someone right now since yesterday. [im going with his close friend aka his cousin] my ex and i still talk and stuff and so i told him that i go with his close friend [his name is wen][my ex name is richard] so i told him and it was realli hard to tell him since i still got feelings for him. but i think that i should give wen a chance since richard already got one and he screwed that one up so its hard to trust him again. when i told richard about that, we talked about some other stuff and then he tells me that i lied to him but i dont kno what i lied to him about. i dont wanna ask him cuz he doesnt want to talk to me and hes realli pissed at me. i understand why hes pissed at me and stuff and why doesnt he trust me? i told him that i didnt lie and that i told the truth but he tells me he cant trust me anymore and he tells me that he hates liars [directing to me in a way

] i cant stand it being like this. it realli upsets me that hes treating me this way

i was crying because i dont want to lose a friend like him. i cant trust him that much but at least he can cheer me up and support me. i dont kno what i can do about this. i think i should let him cool down for a bit but what am i gonna tell him after that? hes prolly gonna get mad at me if i talk to him again. so i dont kno if i should talk to him. and my bf [wen] he doesnt kall as much as he use to anymore. before he would call at 9. then a week later he calls at 9:30. then he calls at 10. after that 10 something. and now he hardly calls. im not sure if hes busy or something else is going on. i cant talk to him for now because hes away visiting his mom. im not sure what i should do about this. maybe im just worrying too much or its just me. i dont kno what to dO!!!

can anyone please help me out? i dont kno what to do about these problems.