You never know what’s going to happen when musicians get together in the recording studio. Sometimes the most unlikely collaborators end up making sweet music together, while surefire pairings end up falling flat. Snakkle takes a look at some of the most interesting, entertaining, and just plain unfortunate musical mashups in recent pop history.

What could be more natural when two people are thrown together in a thoroughly unnatural reality-TV setting than for them to find true love? Well, okay, maybe not always true love—but the heightened reality of reality TV certainly has led to some wild (and some pretty weird) romances. For example, Heidi and Spencer from MTV’s The Hills are still going strong and have the new E! special After Shock: Heidi and Spencer airing so we can check in on their romance.

Here are some of our other favorite reality-TV showmances of all time…