Since baseball season is in full gear, why not get outside and hit some wiffle balls? It's fun, easy to play, and sure to relieve some stress (laughing at yourself is the best part).
One great thing about this "sport" is that the equipment has to be just about the cheapest on the planet -- The ball and bat cost $4.25 through Amazon. Another great thing - a dinky wiffle ball can't cause nearly as much damage (to people and windows) as a dense baseball. Plus you can play with only 2 people - you and your honey.
The most fun part is trying to hit the ball, so you can just take turns pitching and swinging, or if you're really into it, you can make lines on the field. I just use cones or jump ropes that designate Single, Double, Triple, and Home Run. So every time the person hits the ball, you can keep track of where the "runners" are on the bases. I also like to use a chalkboard to help me remember.
Of course, if you want to play with more people, or you want to get more exercise, you can set up bases and actually run around them. It's up to you. Either way, I always end up having a great time. Plus wiffle ball is all about hand-eye-coordination, so it doesn't take much muscle power. That means you very well could beat your friend or lover in a friendly game of wiffle ball.