Im not sure do i like him or do i like the attention ?

ok so i have this guy friend hes like my best friend i trust him mostly. well hes always been asking me out and i always say no but we were hanging out with our other friend and he starts talking about his girlfriends he has 2. and idk but i wasn't too happy about it i didn't say anything but i got like a ping of jealousy or something. i thought i didn't like him that way now idk. but i get this way a lot and i talk to my friend about it she gets all upset like no u shouldn't date him cuz hes a huge player and he is i don't want a player but i thought maybe if i talked to him maybe he would be willing to just date me.but idk the weird thing is i love being with him and having fun and him caring about me. and i find his hair cute but when his shirt like accidentally lifts up and i see his stomach im like ugh put your shirt back on but when its other guys im like whoa hot! idk im so confused i mean i like the guy but idk if i like him that way or if im just into the thought of someone liking me and all the attention idk can someone plz help me give me some advice or something has anyone had this happen before im 15 going 16 hes 17 going on 18 i think i love leaning on him and just having someone to talk to i cant do that with my other guy friends just him i could do it with one but hes not my friend anymore. but idk if i like him that way cuz he can be a real *** sometimes and idk if he could even be faithful and idk if i wanna date him cuz if we break up i will have lost a bff and a bf all in one help???????