How to catch a cheating boyfriend. Guys are gonna hate us for this.

I know guys are going to hate us for this, but really its better to be single and go around having flings than trap a girl and make her suffer.
If you suspect that your boyfriend is cheating on you,What can you do? Here are some things you can do to find out.

• Be direct and ask him if he's cheating on you. He may lie or he may tell you the truth. But either way, he will know that his relationship with you is in trouble. Don't let him off the hook. It's time to talk about boundaries and trust issues.
• Check his mobile phone for phone calls or text messages from other girls. If you can get your hands on his mobile phone bill (on paper or online), you might be able to see who he's been talking to and texting with. Long conversations and lots of texting to one particular number are red flags.
• Check his email, Myspace, Facebook, and instant messaging accounts. Many times, cheaters use the Internet to carry on their sneaky business. Check his computer often to see if he forgot to log out. Don't respond to messages as him, however - that's an easy way to get caught spying before you catch him cheating!
• Look through his stuff for love notes, gifts, and photographs. Are there any spots where he might hide that kind of thing? You can also check his computer. He might have pictures of the other girl saved on his hard drive. See How to Find Hidden Files and Folders in Windows.
• Think of a way to trap him. For example, create a fake MySpace profile that he would flock to like a moth to a flame. Try to get him to talk about whether he's cheated before. See if you can get him to "cheat on his girlfriend" by offering to meet up in a way that practically guarantees cheating, like at a hotel room. How surprised he'll be when you show up!
• Hide a camera or microphone in his room and car. You'll be limited by battery life (make sure it won't beep when the battery goes out), but you'll have a chance of catching him in the act.
• Set up the perfect opportunity for him to cheat. Pretend you're going out of town, or doing something that creates minimal risk for him getting caught. But instead, get a wig and borrow someone else's car and follow him around to see if he gets together with another girl.

culled from : wikihow.com