Please help me... please don't judge...

My boyfriend and I have been dating for 5 months now. I've cheated on him, never physically but I was sexting other guys (sexual conversations and pics) in the course of three months. I'm desperate to make this relationship work because I'm in love with him and I really hurt him. He thinks about it every day and can't get past it. I don't blame him for the way he feels, I feel awful. I have depression that's been going on for 8 years and I've really been contemplating suicide because of it. It's come up multiple times. I truly regret my decisions and would do anything to take it back and for him to forget the memories. He never did anything wrong to make me cheat on him, it's something that I decided on my own. I don't even know why I did it to be honest, I didn't gain anything. I NEED advice, please please please help me! Is there anything I can do to make this better? He's everything to me :'c