What I am trying to say is. Figure out if you want to live through the marriage issues of this type of relationship before you decide to continue.
Marriage is hard. Every morning I wake up and decide to love my husband. That's right, decide to. The feeling of love can wear thin after 8 years and the problems associated with living together and creating a life together quickly overshadow the giddy love. Life gets in the way, even if you try not to let it, work, kids, friends, and family all take its tole on a marriage. So every morning you have to make a decision to love your partner no matter what.
Every relationship is different and will take a lot more than advice on an anonymous forum. Talk to someone you trust, a pastor, a councellor, a parent. Someone who has experience with marriage. It's always a good idea to talk to someone who has a failed marriage to find out the pit falls and the heartache as well as someone who has a long successful marriage, like a grandparent.
Regardless who your marrying it is always a good idea to go into a serious relationship with your eyes wide open.