<human>: We have been friends for several years. About a month ago, he expressed interest in me as more of a friend, and he asked if we could start dating. I've (almost secretly) had a (lusty) crush on him for a pretty long time (but it must've been blatant). I was tongue tied with this sudden question, but I eventually told him that I'd like to give it a go. 

Rewind this to two days prior to him asking, I consoled in him that the reason I was single wasn't because I haven't found anyone, but because I'm afraid of commitment and that my feelings can be fleety and that I don't feel like I should put anyone through this.  Now again, we've been friends for a very long time. 

I really like him. But I don't feel thoroughly smitten, and the transition from friends into romantic territory is a bit rough. I'd like this to last longer, but I feel like it will last the summer at the most (because of my commitment phobeness). I feel selfish, because it seems like he is actually invested in this relationship. I don't know how to get over myself quite yet, and he himself is pretty nervous around me. Yet we both agreed we'd like to make this possibly work. 
(p.s. I adore him, and always have, the thing is I have issues with commitment yet I would still like this to work)

Can you succinctly summarize the text in 1-3 sentences?
<bot>: How do I make my (almost) s.o. feel more comfortable day to day, albeit still stay honest about my commitment phobic tendencies?