I’m afraid I’ll never marry someone I’m attracted to.

Whenever I like a woman, I get too nervous. It pushes her away, even when she liked me first. It has happened numerous times and I wonder if it’s my destiny that I need to come to terms with. I’m 25 male for context. I’ve been in 3 long term relationships and roughly 10 flings/situationships and 20 one night stands. I feel like I have high standards but hopefully fair ones. If you have any more questions I’m happy to answer. I appreciate advice.