characteristics if your girl cheating

how do you know she was having an affair
First: she would pretend to be indifferent and do not care about you
second: he's just going to telphone or reply to text you when she  was in need of you.
third: she would pretend to be busy when you ask her out or go alone.
fourth: she will get busy with himself and she would get mad if you call it.
it's one of the characteristics of how your partner has had an affair or have tired of you.
you should first look for evidence of whether or not your partner is cheating
sorry if your spouse apply as above means the bear likely he is having an affair