howto help be there for my boyfriend

Im 17 boyfriend 18 I dont have any kinda therapy im struggling so much idk how to help we r both struggling so bad and we both had failed relationships because our mental healths werent good but we want to stay together so bad its just so hard to be told over and over i cant help or i cant do anything to make him feel better, he has no license or job atm his parents r so controlling he cant get out of his house he is forced on an online therapy 4-6 every weekday he hates it but idk who else he has. I feel so bad about myself i feel like im not doing him any good he says i am but notjing changes we still cry every time we see eachother we go back and forth, we both have be sa'd and just have chosen to stop our sex life he feels so gross abt what we did together he doesnt know how it makes me feel idek how it makes me feel but he is scared he will feel like he gna feel rejection if we stop, i told him id remind him why were r slowing down, but he is also a bit hypersexual and so many things confuse me i dont know how to handle i dont want to leave i know he can thrive when he gets to that point but idk how to go forward