so confused

ugh so over the summer I "talked" to this guy and I know it's really dumb to say but I loved him but things dodnt workout because he was a butthole and wouldn't drop other girls and crazy stuff like that... well i got over him or so I thought and I have been dating another guy for 8 months now which is a longish time and I love him more than anything but something always makes me think about the other guy.. he always texts me saying that he's changed and idk what to do.. oh and another kicker these two guys are like really close friends ! I care about both of them I just don't know what to do.. I feel like it's wrong to stay in a relationship when u think abt another guy still help!!!