Hey. Fellow asexual here. I've known since puberty that I wasn't into sex. I used to be mocked by the teens around me for being a 40 year old virgin in the future. I didn't know what asexual was but when I heard it, it was such a relief to know there was a label to it.
I would recommend being honest with whoever you want to be in a relationship with. I used to be very open about it towards the people around me (for me, it's like when people say they're from this place, or they identity as this). This helped me to build the confidence to say it to my current partner and we've talked about what this means for our relationship. I believe that this really helped me feel safe and secure in this relationship (I don't get anxious that they will cheat on me because I won't sleep with them).
Just put yourself out there and be open with it. Try to research the asexual community and ask them for further advice. There's nothing wrong with you and you don't need to hide it.
