Can a relationship work, if there is love ONE SIDE only? Im NOT "in love" but care, respect, trust, have affection for him, can it work?

I have been divorced and don't really believe in "love" I haven't any desire to love like that.

I have never had my heart broken, or trust broken.

It just didn't work out last time. I see now I was just infatuated.

Now in current rlship for 7 yrs and a child together, and no desire to marry again, and he respects that.

He however loves me literally to death.

I don't understand why I can't feel that.

I have a great partner, we are best friends.

But will it lead to demise if I don't feel equal love.

I'm happy alone, I'm happy with him.

I have no issues with trust, insecurities, jealousy, low self esteem.

He does have a few issues however as he knows exactly how I feel.

He is happy to let me be me though.

Could marriage strengthen the bond?

Or don't mess with what is working?

Any advice?