Years ago, I picked up figure skating. How hard could spins and jumps be, I thought? It's just applied Newtonian physics. After repeatedly falling on my rear end, I realized it was harder than I thought. But it had an upside. That is how I met my wife, who was ice dancing at the Rockefeller Center ice rink.
If you want someone, you have to be willing to wait for them and trust that what you have is real and strong enough for them to wait for you. If somebody jumps ship for you, that fact will always haunt you because you'll know they're light on their feet. Spare yourself the paranoia and the pain and walk away until the coast is clear.