I know movies involving relationships and animals have been made over and over again, but I thought maybe this one would approach it in a different way. In fact, it does, but somehow it never engages in a interesting story. Acting isn't strong enough to make you feel interested for the characters-- or maybe the story is just too normal to warm you up. This picture is probably much inspired in 2005's "Just Friends", with similar situations and characters. I followed this movie for 40 minutes, but I can say it NEVER engaged me; actually, after those minutes I left the movie running and just felt asleep, which is something I hardly do. That's it, "Heavy Petting" is pretty weak and sometimes lame, reasons why I don't recommend this one. See ya!