Name changed as, quite frankly, I'm feeling a bit silly.
Background: I'm in my late 30s and married to a lovely man. When we got together, our sex drives were somewhat different (mine was much higher), plus I had much more experience. DH was always very vanilla in the bedroom and so, I admit, I got a little bored and detached. Over the years, I ended up suppressing my sex drive to match my DH - to the point that we haven't had sex in years. I've always believed that this was fine as the relationship I was in prior to DH was sexually 'there' but also very abusive, so I figured that I had disordered thinking about intimacy. Whilst I've been with DH, I've put on a lot of weight, plus had a spell of being on antidepressants. All this meant that my sex drive completely vanished and so I was fine with the situation at home.
However, last week I met a new bloke at work. He's younger than me (in his early 30s), attractive and confident. We got on really well and he was being moderately flirty. I genuinely don't think that he had any interest in me whatsoever (I'm overweight and don't look after my appearance like I used to when I was younger) and I would never act on anything, but since then I can't stop daydreaming and fantasising about him. Really explicit stuff. To be honest, it's scared me a little as I thought I had no sex drive but it's suddenly come back with a vengeance.
I feel like an old, fat, silly woman who everyone would laugh at if they knew what was in her sordid thoughts. But I can't help but wonder if it's a sign that I need to change something with DH? Or whether it will pass and life will go back to normal. I'm also a bit worried about interacting with this bloke again - what if I come over as a schoolgirl with a crush?!