is it normal to want to love someone/ get to know someone in a friend or sister way

There’s this guy I just worked with who honestly felt like another version of me, someone who I could get along with massively. Everything we’d talk about was the same, our interest, our taste in films and music, it felt amazing to have someone to chat to. I can’t lie he was also physically very much my type, so I do fancy him. I said to my friend that I think I found the love of my life, but the sad thing is he’s taken so I’ll take having a crush dip and suppress the fact I fancy him and she went all serious with me. Started saying “good because that can ruin a friendship, especially with a girlfriend”, and it wasn’t meant to be so deep and now it’s got me massively overthinking. I’ve only known him a very short time but I wanted a friendship to be there yk, we’ll never really see one another every again after the festival but it felt nice to have had such a good friendship, even if I feel like I’m another life he would be the perfect one. Can I not feel like that and still have a friendship? I’m never gonna do anything about it, I currently like someone else and he also has a gf, but can I not joke about it without it being all serious? I’m massively overthinking it

Again, my sister, if she makes any movement with her mouth, I feel it like a groin (wetness) like arousel. And I looked into her eyes for a longer time in order to see if I was attracted to something and it was as if I was asking yes, yes? What is that? test same? scare me?

So I know for a fact that I'm not ready for relationships. It's just not something I feel like I can do due to insecurities, self confidence, anxiety, and self esteem getting in the way of that. It's something that's always on my mind due to fomo and societal norms. I know I would like one but I haven't found any other reasons beyond the biological want. There's a woman that I really do like spending time with and I kept thinking of trying to chat with her more just as a friend to hang out and just get to know her more. Everytime I've seen her it's been a great time and we get along really well. We click on a lot of things and have big interests in common. I'd be lying if I said I didn't think of her as a romantic partner but I just know that's not something I can do. Is it disingenuous to try and be friends with her despite having this on my mind time and time again? This is the one thing I could never find myself getting over.