Unsure what to do - wwyd?

Slightly long but will try to keep it to the point. Years ago, back when I was a single Mum and 28, I had a short fling (to be honest when I was single I slept with who I wanted when I wanted!) but this particular guy I stayed friends with. We had been friends for a bit anyway, mostly on social media, through a few mutual friends. The same year we slept together, I met someone who I ended up staying with for 3 years. During that time, he also met someone. Fast forward a bit and we've stayed social media friends but haven't ever seen each other in person. I'm now married to a guy I have known for over 20 years, he's a great stepdad to my kids and I am stepmum to his. One of his kids lives with us, too. We have a great marriage/life. The 'dude from my past' has stayed married to his lady and they've got a couple kids too. Now my husband knows that I liked to sleep with alot of men in my past and has never been bothered by that, but is a little jealous at times. He has asked me a few times if I'd ever slept with 'dude' and I said no. The reason I lied was because of how my husband had acted about other men (like acting kinda terrorial if they were loitering on my social media or whatever) He seemed happy to eventually accept this but definitely probably still suspects we did. I figure it's not a big deal, I like having 'dude' as a friend because his kids are sweet, and he's just a nice, ordinary guy. Anyway, the worst part is that when I posted a photo of my husband on his motorcycle, 'dude' commented as he's into them. He asked me about my husband's bike so I sent him a message about it. He invited my husband (to me) to go out for a ride. My husband was well happy about that as he has no biker friends. I suggested that they add each other on social media but now I regret it. They have organised to go for a ride this weekend. I am concerned that the topic of me may enter conversation somehow, as I am the mutual. I am not sure if I should come clean to husband after years lying about it, or if I should ask my friend not to mention it. I mean, do men do that??? Am I overthinking it?