Do you think i should stay with my long term boyfriend?

i've been with my partner for 3 years now, him and my daughter do not get along. it has been this way since the start, and getting worse. i myself have started to get doubts about my feelings for him, on the weekend i found out that my partner has been giving my daughter sly glances without me noticing. he also pushed into her aggressively as he walked past her in a pub, and refused to talk to her as she tried to make conversation. all this was witnessed by other people, although at the time, In his defence he was drunk. when i confronted him about this, he denied all the allegations. i have become extremely unattracted to him lately because he has become severly overwieght for his body type, which is another factor. when i was single i kept on top of all my bills and was not in debt, now i am with him i find myself in bad money situations, i am now in debt. i dont know quite what i should do, i love him but i can not excape this doubts in my mind. any advice is welcome. thanks