I would say the pro list is probably more important at this time in your life. I have watched many men (my ex husband to be included) stay in relationships because they were "scared" or "comfortable", and then it ends up worse- wasting each others precious time and someone ends up more hurt. You are young, and if you are having an "urge" to be intimate with another or explore options, you probably need to get that our of your system before committing to one woman. You owe it to yourself and to her to be honest, even if friends and family disagree. Now if you look at this woman and see her as the mother of your child, or your wife- then keep her, everyone goes through times of doubt or questions things but I worry with relationships that start so young, I have seen a pattern where the men decide later on down the road to "explore" or end up cheating because they suppressed those feelings.

Dig really deep to decide what it is about her that is keeping you with her. I personally want to be with a man that looks at me and wants no one else, knows I will be his wife and mother of his children, and It has taken me a little while to find that man- who I find is usually in their mid 30s.

Don't make the mistake my ex did in dragging me along for 6 years and a divorce at 29... I have a responsiblity in that also by not recognizing a non-commital man, but I wish he would have been honest with me and himself and walked away so I didn't have to heal the pain of infidelity and starting over at almost 30. Wish you the best.