I respect your reason to CTB, but I ask you please do a lot of research online before making such a big decision, there may be treatments, hacks, tricks, techniques that you haven't found yet. go search in the deepest depths of the internet, read a lot and study for hours and hours. in the end it may be worth it, or you'll at least be able to say proudly that you tried.
that's my advice.
but answering your question, loneliness, social isolation, inceldom (lack of sex) and lack of romantic partners hurt and they are indeed some of the reasons I'll CTB, so yes, if I have this disorder then I guess it'd be one more reason in the list to CTB in fact. but I wouldn't necessarily do it immediately, I could wait for years, trying to have fun with other things, maybe video-games, fitness, nature, hobbies, art etc... before finally catching the bus. there are other things in life that can give pleasure and we need to be our own light, as relying on other people to make us feel less lonely is too unreliable and they'll let you down. hobbies don't let you down. you can even eventually even learn to be alone and happy.
maybe it's probably because it was a girl? life for men is harder. we already have a hard time finding a partner if we don't have enough money, income, if we aren't tall enough, high-status enough... then dealing with that kind of disorder on top of it all is... hard.
women have a much easier time on romance and sex, no wonder why the huge majority of incels are men (btw I'm one of them).