MTV presents wide-ranging reality series all year long, but one thing unites a bunch of 'em (besides the obvious that they air on the network): There's plenty of hookups romance to go around.

From popping the question and partners saying "I do" to surprising make-out sessions, we're taking a fond look back at all of the moments that made our hearts go pitter-patter -- and a few that made us gasp in shock.

Relive the passionate interactions below, and be sure to keep watching a bunch these cast members only on MTV.