I think I genuinely lasted an entire week without logging on to any of the sites. But one night, I'd had a crappy day at work and couldn't sleep. I lay in bed, thoughts racing through my head. Just a little Tinder wouldn't hurt. My phone beckoned -- no implored -- me to pick it up and swipe. So I did.
No one can ever really know what's in another person's heart or brain, and everyone, single or married, is at risk of being devastated by love. It can happen to anyone at any time. If you can remove the self-blame, then you can start to be curious about what's developing between the two of you rather than be worried about it.