2 years and he starts lying..

So idk if I should post this here or not.. I usually don't but I'm just in desperate need right now... I have been with my boyfriend for 2 years.. he was my first everything.. I'm 18 now and we have been living together since I was 16.. I have known him for years and we just met up one night and have been together ever since.. so of course I am deeply in love with him.. he pays for everything for me.. including apartment, food, bills and just other things.. and has for 2 years now.. although lately at his new job he works 15 hour shifts most days.. I thought this was buzzard at first but I have looked at his schedule and I do know for sure he is working this.. so I barely ever see him and I'm usually home alone.. our relationship has been a total emotional roller coaster lately due to us both stressing about so much.. so wen we are around each other we usually fight.. or just argue over stupid things.. now about 2 months ago I found out he had lied to me.. and went out for the day with some friends he works with.. he wasn't going to tell me. I found out on my own and he finally admitted it.. so I was like ok it's been rough I get it.. but now he has a girl in his phone under a different name and she was a top constant but there are no messages or calls.. I asked him and he said it's because I would get mad.. I told him I wouldn't get mad unless he was being unfaithful.. so lately he still works all the time.. has been ignoring me for 8 hours at a time.. while at work. It takes 2 seconds tote t someone.. I'm in a very bad place in my life right now considering I have depended on him for so long and have no where to go now really... he swears he is not cheating but I keep having dreams and supsisions of it:.. I don't really know what I'm expecting here I just felt I needed to post this.. if you could please just send good vibes or advice it would be very much appreciated!!!💕