Should I break up with my boyfriend?

I'm so confused as to what I should do about this situations...so here I am...on a website asking about my relationship ha! So here I go...I have been with my boyfriend Alistair for 16 months now..I am 19 he is 20. We are both love each-other to death. The thing is he has ADHD and it makes thing incredibly hard on our relationship. Like he is soooooooooooo untidy it's to a point that it is revolting. Im not the tidiest person in the world but I like being clean. He is lazy....he hates working, he quits jobs because he is too lazy to keep it up, his parents treated him like a baby for all his life....he gets a lot of money from his parents cause they are loaded and he spends it on stud ****. Anyways he is always checking out girls when I'm right next to him. One time he was with his friend and his friend was driving he actually leaned over in front of him on his side to check out this girl....I feel like im disrespected and he doesn't care that he do the things that he does. The only thing that is keeping us together is love. He has only one friend and he is 110% dependent on me....since he moved in with me and mum he expects me to do EVERYTHING for him....i feel like im his mother all the time.....what do I do guys....the thought of breaking it off brings me to tears cause i Truly love him. what do you guys think??? HELP!