It's a reasonable question to ask: can a woman cheat and still be in love? Heck, can anyone cheat and still be in love? If you asked this question to a number of people on the streets, there's little doubt that many of them would answer no.

Studies suggest that about 20% of all married couples will experience infidelity at some point in their relationship. Meanwhile, that number jumps up to 70% for unmarried couples living in the modern world.

So, it's no wonder why some people get suspicious of their partner's faithfulness. After all, there's a lot of temptation calling our names.

It's a perfectly reasonable question to ask if you know that it's happening: why is your girlfriend lying to you? What reason could she possibly have to do that?

We have all been there. Your girlfriend won't return your calls or sits in icy silence, leaving you in the cold.

Sometimes we have done something to offend or haven't been paying her feelings as much attention as we should. Other times, you might find it a complete mystery why your girlfriend is suddenly giving you the cold shoulder.