u/Either-Ad5271

I (26M) sadly experienced being cheated on last weekend by my gf (19F)
As I may know many of you are going to conclude it to the age gap, and yes that probably has a part in it.
But she didn’t want to and regrets it. I have gotten an apology. The guy was pushy, but as I know from her, she didn’t say no either.
I wasn’t at this party, but I knew it right when it happened, because I have good friends. But I wanted to hear it from her.
I’m not a man who gets mad, and I waited until we got home to try and talk or “find out”. I am very calm, something she said in past tense that was very unusual for her. She was sure I would leave her right there and then. Or at least get mad. I don’t.
I pushed more for information or a confession than I was comfortable with, until she finally told me. It happend twice in the same night. Just kissing and making out. She was also very drunk I might add. Not that it helped or that is something to make it understandable not at all. She is also struggling a lot the last couple of weeks. And I write this so you might see her and mine perspective. I think that is fair.
Honestly I want to hear what your thoughts are on this, if you would have let it go or made some changes or even break up. Or maybe have gone through/done the same. Maybe it’s likely to repeat?
Thanx for insights people.