Nervous to hang out with my boyfriend?

Firstly, if your boyfriend bases a relationship on your house then that is completely shallow! What your house looks like has nothing to do with you, or your relationship. Secondly, these things like falling over happen. Although you might feel like you want the ground to swallow you whole at that moment in time, it might actually help you both get over the awkwardness, and it gives you something to look back on and laugh about. We can't be perfect all of the time, and although you want to make a good impression, being yourself and not worrying about these things will probably make the whole situation easier. You're with a guy who likes you and who you should be getting close to! Therefore enjoy his company and if things go wrong, then things go wrong! He's not going to think any less of you!