Help me find this book

Please, help me find a book. I never properly read it, I think I only ever started it and then I DNFed for no reason I can remember. But now I am trying to remember which book this was and I can't. Absolute blank. Here is what I recall from the plot:

MM Romance, contemporary. One MC had some kind of condition/disability where his balance was affected (I remember him worrying about moving and falling but I can't say if he had any aid like a cane or something else). He was the guardian of two kids or maybe only one. I remember a boy for sure, but if there was a sister is a mystery.

The book opened at a wedding where he was regretting going. He didn't know anyone aside from one of the grooms, I believe. They knew each other from some online support group (maybe, or maybe the groom was MC's client in something - I am just crossing over different books, probably). The boy was bored at the reception. The MC meets the other MC there at the wedding.

Honestly, I don't know. I maybe DNFed this because it wasn't my book. But now I really want to find it.