FWB or what is it 😅

I’ve been having sexual relations with this man gir the past 13 years. We have a 7 year old child together but we’ve never been official. I was in a relationship with another man for the past 6 years but each time him and I separated I’d end back up with my friend. The past year I’ve been single and strictly messing with my friend. We’ve been going on dates once a week for a few months now and usually spend two night out the week together. Truth be told I’m starting to become attached and just have a guard up not wanting to be hurt again. He was buying me flowers each week and telling me he loved me but I couldn’t allow myself to say it back because of the guard I have up. I wish him and I can spend more time with each other but we both have children and responsibilities. Do y’all think think this will ever go anywhere or at this point just accept we will always be fwb 😅 *the kids don’t know about us. He comes while they are sleeping and they never even seen us kids. If we take the kids out together we don’t even hold hands. They see us as friends”