Common signs of infidelity that you might want to look for include:
Improved appearance.
Secretive phone or computer use.
Periods where your significant other is unreachable.
Significantly less, or more, or different sex in your relationship.
Your partner is hostile toward you and your relationship.
CHEATING
>>>>It's something many of us have done (or thought about doing) at some point in our lives. And anyone who's dealt with infidelity can tell you it causes a lot of pain, guilt, and suffering both for the person who cheated and the one who did the cheating.
Good thing I don't have a partner, I don't need to think if he has hmmm, haha