In your hometown, you can’t even go to the grocery store without running into someone who knows your mom. But on spring break? You’re just another face in the crowd of frat bros, beach bums and vacationers who will never cross your path again. What happens on the beach stays on the beach — or so they tell themselves.

Dear Abby: My ex and I just split and in her last text to me she asked if we could still be friends. I’m still really hurt, but I really do love and miss her — but how can I settle for just being a...