Boy meets girl, they hit it off, go their separate ways, meet again, continue from where they left off, go their separate ways, meet again, continue from where they left off, go their separate ways, meet again...
I lost count of how many times this is repeated before boy and girl get together for good. Not much of a storyline, but A Lot Like Love is still an eminently watchable movie. There were shades of Love Actually, but this one doesn't come anywhere near the level of exuberance and poignancy. Another thing going for A Lot Like Love is the kick-ass soundtrack (some of the numbers are old, though).
One thing I didn't like was the way we are led to believe that there may not be a happy ending. I appreciate the sentiment of maintaining tension, but they could have been more subtle about it (two examples: a) you think Emily is putting her own child to bed when Oliver comes to serenade her and b) the piece of dialogue between Oliver and the tailor in the men's clothing store where Emily's friend learns of Oliver's 'wedding' seems quite contrived).