Had a relationship about 3 years ago [then 19M] with my ex-girlfriend [then 18F], together ever since we got into college. I was happy for about 1 and a half years and so was she (or so I thought, she also had suicidal thoughts)

All went smooth sailing until I was chilling one day at her house, alone. She had two phones, one at home where I was and one on her and she was at work, both phones logged in to her Facebook account. Phone bings and I don't know why but I'm so glad that I picked it up and read the message, I didn't even think about it, I just did.

Just the first message I read brought me to rage, not to mention the rest of the conversation, it was her ex. I went for a walk, cried about it, went for a beer with my buddy, cried about it again and after I cooled off a bit, I headed back at her house, right before she came back from work.

I confronted her about it, as calm as one can at this point and told her that I know everything. To my surprise, I did not actually know everything. She confessed that they never really broke up and that she cheated on me with him. At that moment, something snapped inside me, it's like in an instant I didn't feel a thing other than disgust for her. But she told me and convinced me (stupid me) that is long over now and that they don't see each other anymore because they live far away from each other, which at least I knew that was true.

Three months go by and the only feeling I have for her now is just the will to have sex with her and nothing more. Then comes the time that she leaves to go to work out of town. I was working too so meeting with her during that time is impossible.

Suddenly, she comes back to have an emergency surgery, stays one day and then leaves again, all we had was a 5 minute coffee break.

I was so done for literally months, I just didn't give a crap anymore but we never broke up. Here comes the time when she comes back, 6 months after she initially left. I was so, So done and I was about to tell her but she beats me to it. She came clean and said that she cheated me with her ex, I was just lifeless. Then she tells me she cheated on me with two other guys, I didn't care. Admits that that "emergency surgery" was just a cold-blooded abortion and the kid was of course not mine either. I just stood up, asked "Is that it? Are you done?" and I left her alone, never to see her again since.

Thats just about what would I consider the worst thing your SO can do to you but I didn't care, after so long I was so happy. I swore to myself "you're not going to get into anything unless you KNOW she is completely trustworthy". Four months go by all by myself until I met someone truly special that I love and adore to death and we're happily together seven months now. I guess its God's way saying "he's had it too rough, it's time he met happiness again."

TL;DR I have an ex, she cheated with me with 3 guys, got pregnant and had an abortion, I didn't even care, I'm really happy now.