I don’t want to be in love

I’ve [24F] fallen in love with my best friend [25M]. He told me a month ago that he’s in love with me. It would be perfect except that I’m not in a place where I want to be in a committed relationship. I just graduated from my masters program and got a job where I travel a lot. I feel so guilty, I don’t want to be limited because of a relationship and I also don’t want to hurt him. I talked to him about it and he said he’s fine where things are at, best friends who kiss sometimes. He said he would wait for me to be ready to be together. That feels like so much pressure though, it’s not in my plan to invest in a romantic relationships until I’m about 30. He told me if I start seeing other people to just not tell him. He’s my best friend and we tell each other everything though. I don’t want to keep secrets like that. This is probably not going to end well. I would love some advice.

TL;DR I’m in love with my best friend and don’t know what to do about it