I'm assuming since this is an FML, she's heartbroken. I also assume she wants the child. The first thing, period, to worry about isn't if he wants to stay with _you_, it's does he see himself being an active and stable father? Will he visit regularly, not just on weekends, but after work too? will he take turns with you being the stay home parent on weekends so you both have a life? Will YOU be adult enough to sit beside him at the school play, watching your child together? Will you do everything you can to make sure you're allowing him to be an active father? Can you two both be friends for the rest of your lives, and more importantly stand up for each other against any future partners? If you can answer yes to all of this, your kid has a chance at a great, if different life. You have a chance to get back into the pond, still take care of yourself, and be choosy about your next crush. If the answer to any of those questions to you is "no", you need to sit down and decide what's more important, your convenience or the child's happiness. And you need to consider all aspects of being a parent. If any of them for him are no, you need to immediately start prepping yourself to be strong, independent and still desirable. You don't want to be alone, obviously, but you'll have to be until you find that perfect partner to share not only you, but your child with. Any other options are yours, but think about the child's life before you give birth, you're out of time then.

He wouldn't be the first guy being scared by marriage.. FYL though.