Any other gays/lesbians who have an irrational fear of never finding someone to marry?

I'm a 21-year-old cisgendered lesbian, and I've had sex with about 7 women (some of whom I met on Tinder or in bars, though not for sex exclusively). They were all one-night-stands though.

I have never had a true relationship with a woman and I feel like I might never get one... I feel like I'm too different from people to be in a relationship, even though I'm quite good-looking and people tell me this.

Anyone else feel this way?