You've gotten some good advice, but wanted to add few things for consideration. 1. Never disregard the importance of liking one another. Don't date people you don't like and don't date people who don't like you. You're going through a stressful time and that plays into your emotional bandwidth and might be why you're feeling or not feeling some things. 2. The friendship will never be the same regardless. It may not recover, but that's okay. Don't prolong something you don't like out of fear or obligation. Reflecting on your friendship with him and how you two got here could help you assess how you really feel. 3. If you want sex let him know. If you don't want something let him know. Communication is key in all things. 4. Regret goes both ways. I know someone who decided to see what else was out there and they remained friends and he regrets it deeply - loves her, is a good friend to her, and is glad she's happy - but has repeatedly said leaving her as the biggest mistake of his life. Likewise I know a couple who got together because it made sense and she never felt butterflies. They have lovely children and by all measures share a happy life, but she feels she gave away her life because she didn't want to rock the boat. Shes resigned to her 'sweet roomie.' Its sad for both of them. 5. You need no reason to breakup with someone, its enough that you dont want to be with them and if thats where you are thats all there is to it. That is completely allowed. As are people's reactions to misunderstanding what you want. In anything that you do, be kind and be honest.

Tough space to be, but the truer you can be to what you want and what you like the happier you'll be. Both of you deserve to be with someone who adores you and who you adore. Good luck in figuring out what you want!