Is it ok for gf to chat with other guys online?

[Paul]

If she has been talking to you for 4 1/2 years and been together for 2, there is a time and day that a certain behavior from before must change, when should it have to change? The fact that the 2 of you know each other for quite a while, she's supposed to be more respectful for you than what she's showing now.
Gary, Don't let her step on you, you're the man in the home, and you must have the respect of her and the other way around also. It's definitely time to make that happen, if not you're kicking the can down the road until it'll turn more serious.
Act NOW Gary,