That is exactly what I wish I could do. The last two crushes I've had I knew from the get go that it wouldn't work.
You know your track record. You know how this is going to end. Don't get attached because this will only end in more pain.
But no matter how hard I tried, I got attached, I found out it wouldn't work, which I really knew the whole time, and I couldn't get over it. I couldn't just shrug it off. Each time it happens I'm crushed for days or even weeks. Its the kind of hurt I see coming from a mile away but no matter what I do or how hard I try, the pain never gets better. It never lightens up. Each and every time it hurts so bad. Sometimes I try to convince myself that I don't need love. Thay I can live without it. That I can go on without a partner and be just happy, but all that does is make the pain worse.