If there's one thing I would say to newbies to the dating scene, it would be to not automatically believe anything anyone says to you no matter how "trustworthy" they seem. Always give time for people to earn your trust because nothing is guaranteed. I'm not saying to be unfriendly and pessimistic, all I'm saying is, if your emotions are at stake, don't be a fool. Some guys will do almost anything in the beginning to get you to fall in love with them. For your sake, just make sure that the guy is at least good enough to fall for. If a guy says, "I will never hurt you," don't believe it because no one could ever promise that. He can't predict the future and there's always a chance that he might hurt you unintentionally. Plus I always think it's fishy when a guy has to say things like, "I'll never cheat on you" or "I'm a nice guy". Good genuine hearted people don't talk about themselves like that because they never need to say it prove it. It's questionable when people try to sell themselves because if it's not something that they would ever do, why the need to assure it?
There's always a balance for everything. Be smart and learn that balance. Whether you're starting in the dating scene, in the dating scene, or in a relationship. Find a guy who is worthy of your time. After all, no one will quite have your back as much as you do.
"To be old and wise, you must first be young and stupid." -Unknown