My friend, I am so sorry you went through that. I understand it is incredibly hard to get over a betrayal coupled with an attack like that, but I know you can do it. Let yourself breathe and take your time but when you’re ready, there is a whole world of love out there for you.
There are so many people who will cherish the exact part of you that she took for granted. It is easy to go through something like that and come to the conclusion that you should stop feeling. I hope you don’t.
As for people saying you’re an incel… I literally have no advice other than no longer talking to them. There are people in marriages who are “involuntarily celibate”. This could become a rant about the awful nature of even the term “incel” but I think that would be a waste.
I hope you continue to show your strength by refusing to hide your vulnerability.
I think that maybe a different way to look at it would be to ask: why is vulnerability a bad thing? Everyone has emotions. Everyone is impacted and affected by things. To use your situation as an example - your partner betrayed you. You SHOULD be vulnerable to that. The fact that they can’t fathom having that level of vulnerability, to the point that they claimed you were trying to manipulate them, is the problem. That kind of emotional invulnerability is what leads people to do the kinds of things they did.
I truly believe that being vulnerable in front of someone, especially when they have hurt you so much, is strength. Showing someone how much they hurt you is really hard. Find people you can be vulnerable with. They’re out there.