let's see what we have here...

ok, not bad. it's haiku-like in its brevity, but then again, its brevity is also what holds it back. you're writing about infatuation. it's something every poet has tackled, and luckily you seem to be in a good position in life to really go after what that feeling is like, and i sense that in your poem--that is, you've at least got your idea to the reader; good job. perhaps what it needs is simply a little more. it's abstract, which isn't necessarily bad, but with it being so brief, you need just a little more content to further convey how wonderful the ride is, or just how painful it can be. you hit on something about a grin, and i'd work with that maybe. a smile means so much when your eyes actually meet for the first time. infatuation is a big idea and there's a lot you can do with it. focus on what it is you want to say about it and then let loose your heart and mind onto paper. it's best to say too much in a poem than not enough.