Do men come back because they think I'm easy?

Last year, I went through a breakup, then had a situationship, and later a FWB thing.

In all three of those, I was the one who got rejected. The ex said I was too clingy and he needs to live his own life. The situationship ended because he said he was too busy to focus on me. And the last one told me he met someone else.

I tried to hold on until the very end, but they all rejected me.

I was hurt last year but now I’m actually enjoying my single life and feeling happy on my own. But this year, every single one of them reached out saying they want to see me again.

Of course, I turned them all down. But I don’t understand. Why didn’t they try their best when they had me, and only come back after letting me go?

Is it because they think I’m easy? Or that I’m someone they can take for granted?...