Taurean men the dark side or their defensive side

We know them as:

1) Loyal
2) Hardworking
3) Sweet
4) Caring
5) Providers

But I am finding that they can be (I thank the stars mine isn't and I am knocking on wood):

1) Liars/Deceptive
2) Misleading
3) Womanizers/Players

Ok I havent been here in a long long while soliciting advice so please help Lol with this scenario or add on to the dark side and what motivates them to do that, like to know how they tick to give my .02. Honestly, I havent had the drama that these three girls have had in a relationship that I've known a man since I was youthful than they've had in 3-6 months spans.

I broke down after being defeated with analyzing my little cousins scenario.

So here is scenario 2:

This guy that we will call her Judy is dating is also a player seems a bit of a womanizer tells her what she wants to hear all the time. Now me being a Libra you know how we like to keep our little scales balanced and be positive about scenarios. Well, I told her that he is defensive and they aren't in a relationship so he is guarded and just blowing fluff. How can she get beyond his exterior of lies and half truths to make him comfortable that he can be himself with her?

She's a capricorn.

I got one more scenario. I told you these bats are driving me bananas! Lol

Womanizers lie because they can and have no interest in being domesticated by a woman, he is doing any and everything possible from lying to being a complete jerk to telling her what she want to hear because he just doesn't want the complications nor does he want to be any ONE woman's domesticated yes man (yet)...sad thing about dating a womanizer is there are little few options for the exception of go along and play the game or get out completely while her heart is still intact.