Why Taurus men r flirty with girls but dont admit

Have been dating this Taurus for almost 11 months now. At first, just thought that he is being friendly with people, then noticed that he seems prefer pretty girls company, and likes to touch their hands and having physical contacts with them when talking or joking with them, it all seemed purlly innocent though. Then found out that he normally went extra mile to help out a few of his good looking girlfriends (one at a time, dont think that he liks multi-task), and often talked to them regularly and didnt want me to know.

I am not a jealous type, but he seems doing all these behind my back and didnt want me to know, that makes me start thinking if there is really something going on.

I am sure that he is not gona cheat on me, but the problem is that i fear that it is a sign that he is keeping his option open.

Can any Taurus find any similarity here with my Taurus and let me know if it is normal for you to such a thing when u have a long-term girlfriend?

well, it is so easy for a guy to blame the girl for the reason why he 'had' to lie. dont u think that by lying about it makes the situation worse to your partner?

He went on a holiday and didnt invite me. And told me that only couples were going, then after they came back, i accidently found out that there wont just couples, and he was hanging out with this one girl a lot rather than with his mates (this girl put on lots of photos of them on facebook), plus he lied about they were sharing a room together...

Well, whats ur say on that, GB?