Do you think my son will ever realize he has a father in my husband

Sorry another post/update. I just got back from my sister's bachelorette party. I honestly thought you have it a week before the wedding, NOT the night OF. And I'm on meds so I'm the only sober potato there!

Backstory was pretty much my son wasn't even supposed to go to this wedding. He was supposed to go with his dad. He's my middle child. My oldest and youngest father is my hubbies and my middle I got pregnant with him when me and my hubbies we're broken up. My middle didn't want to go because he's in the 8th grade and still has bathroom issues at night that only our family plus his shitty stinky booty dad knows about(sorry still pissed). He was embarrassed about it and asked his dad back in April if he could spend the wedding weekend with him and he said yes and then his dad tells ME last minute he's not gonna get him and spend the weekend with some girl instead. Told ne the week of the wedding. My son was extremely disappointed. He already has no self esteem and looked forward to being with his dad. I'm the matron of honor so I couldn't back out the wedding. He was upset, frustrated, and angry he had to go but me and my husband are gonna make it up to him. I tried to suggest diapers for when he sleeps but he d is didn't like that at all. We came here and I spoke to my mom and was able to at least arrange sleeping arrangements where he and my oldest daughter shared a room along with a cousin who is a heavy sleeper. At home he usually strips his bed and me or my hubby gets his sheets and washes them.

I was out until fucking 2AM with my sister "partying"(sober😑) and I drove her and 8 drunk bridesmaids back home and or to their houses. I had to DRAG my sis to her bed. Better hope she doesn't miss her own wedding. I went to check on my son to wake him to see if he needs to go bathroom but he wasn't in there. I walked by the upstairs bathroom and I heard my husband's voice and son's voice and water. I knocked asking were they okay and my husband said yeah and I could come in. My son was in the tub. My husband said they were just talking about his dad. I asked my middle baby what about his dad and he just doesn't understand why his dad never seems to want to be around him. My hubs said he was saying he doesn't know why. But whatever it is it has nothing to do with him and isn't his fault. He had been upset all week but that was the first time he truly spoke about it and expressed his feelings. And before anyone says anything nobody could see his bits in the tub. My husband even said he wasn't in there when my son got in, he just ran the water. I stepped out though and went to bed and my husband came to bed and said he woke him up to go bathroom but he already had in the bed so he told him to take a bath while he fixed the bed and got on the topic of his dad. My husband was also able to convince him to wear a diaper the rest of the weekend.

See my husband and son's relationship is "complicated" as in it seems like he wants a father son relationship but he pulls away a lot when I think they're getting close. My husband is super patient when it comes to him and does see him as a son. I know my son wants his biological dad to care and it hurts me too that he doesn't. But my husband does care. He cares so much. I know I can't force him to call my husband dad but I just wish he could see that he does have someone who wants to be a father figure even if it's not biological. Idk if anyone has step parents who you consider your parents but how long did it take you to accept them?