Genetically predetermined FA

First: Sorry for the bumpy read, I'm German and my English is awful.

I'm 25,m, and never had a relationship, never had sex, never even kissed a girl. Not that I didn't try to date, socialise on parties or randomly in school and college - but I lost track on how often I got the brush-off after the first date or even before. Bleh, I'm rambling....

So 2 years ago at cristmas, my grandmother asked me when they can expect me to introduce a girlfriend to the family, awkward silence, 'Well, erm, I dunno...'.
One day later, my grandaunt (76 by now) walked up to me and said: 'So you are the next one I guess.' When I asked her what she meant by that, she told me that for 5 generations, there had always been one member of the family, who would stay alone for her/his entire life, without a partner and mostly only a few (but dear) friends. My aunt also never had any relationship. By that time my sister, 5 years younger than me, already had multiple boyfriends.
So yeah, here I am, not really trying anymore, getting more depressed every year.

No idea what I thought to accomplish with this post, but I had to get it out of my system and this subreddit felt more appropriate than r/offmychest

o/