I don't get this help?.... Virgo and Pisces problem?

I have a little question is Virgo (Girl) Good in a relationship with Pisces? (Guy). Let me cut this short. isn't Virgo suppose to be compatible with Pisces since it's a earth sign? I heard that people have been saying that they have been having problems with Virgo but I honestly didn't really believe it.... Okay long story short my brother is a Pisces and his past girlfriend was a Virgo. They were together for about 12 years and Virgo left my brother Pisces (They always fight and Virgo has problems and always end up throwing out my Pisces brother outside.) This time she was real so my brother thought that Virgo was with somebody else because she is always in Facebook all day long. And he was right that she was with a guy. He knew that because his friends have her Facebook. His friends be telling him that oo she be with different men whoring around blah blah... Okay to cut it short Virgo threw Pisces out the house because Pisces wanted to know who she was always texting and wanted to look why she always giggling and laughing. He kept asking her until the point she got his clothes in a bag and told him to get out the house cursing and making a tamtrum always and told him he never going to see the kid they had.

I have a couple of questions and if you can will you please answer them?

1. Do Virgo's have problems with water signs?

2. Are Virgo's crazy?

3. Why are Virgo's known to be a whore and half of the people hate them in this selection?

Ps. I don't mean no offense to Virgo's in this question. And also I won't look for her chart because I forgot her year of birth.

Please no rude comments...

Thanks for answering god bless!