What's wrong with me? 😭

We've been married for 2 years, together for 4. We're both in our mid 20's. I've only ever been in one other relationship and ... we had intense chemistry. Not just sexual, but we 'sensed' eachother it's like we had a different type of connection, we just felt super close. When me and my husband met we shared no feelings like that whatsover. We were super compatible, but both felt blank about eachoter. We love eachother deeply, but both feel nothing. No matter how hard we both tried, even while cuddling or having sex it's like we never formed that connection. It's not passion, it's not lust. It's the ability to feel close. Obviously since we are married we are very close, but don't share that deep connection that I had with my ex. It's more like we are roomates that share our last name and have sex. I feel dead on the inside, so does he. We have an amazing marriage, deeply love eachoter, but hace 0 connection 🤔

My husband is a 10/10. He's very attractive by anyone's standards. My ex wasn't, so attraction isn't the reason.

Which is why I always thought that I had that with my ex since we were best friends since childhood and got together in our teens so it's probably just hormones.

Well, last week a stranger asked to use my phone. The second I gave it to him I felt that connection again. With a damn stranger! It's like I felt safe and warm and close to him and protected. I don't even know how to describe it. It's like a warm feeling of protection and closeness. The stranger wasn't my type, I wasn't interested on cheating my husband or anything like that, but couldn't wrap my head around the fact that I felt a connection there. He wasn't even wearing perfume so it wasn't a manly scent that 'played my mind'.

Please tell me what's this about! I didn't do anything bad, I would never ever cheat, I just want to know what happened.

And what do I do about it?