Once you have taken your vows, don't do anything to break that trust. You have both taken vows to be faithful in every way to one another. Now it's time to believe in one another and trust your partner.
Suspicion and doubt don't cause a spouse to cheat, but if one spouse exhibits high degrees of any of these to the other, it spells trouble for the relationship. Set reasonable boundaries and stay within them - this fosters trust, and the longer you each stay within the boundaries you have agreed on, the more trust you will build as time goes on
No, you may not come and go as you please, no matter how much that may rankle. You have a responsibility to your spouse or partner now, and the sooner you accept it, the fewer fights and arguments you'll have.
Acting as if you are free and accountable to no one will pretty much ensure that you will be single again - soon. Instead, keep in mind your love for your spouse and the love your spouse has for you, your commitment and your vows.