I think he's asking this girl to ask him if he's really not as serious about the girl he's singing about as he thinks. He has a tendency to look at a girl and have that instantaneous feeling that makes him fall in love, or develop a crush, and he often just is in it for the chase.. to see if he can steal her heart. But he's asking for forgiveness ahead of time before things get too serious, and she realizes he might have just been playing games with her.
I think he's asking this girl to ask him if he's really not as serious about the girl he's singing about as he thinks. He has a tendency to look at a girl and have that instantaneous feeling that makes him fall in love, or develop a crush, and he often just is in it for the chase.. to see if he can steal her heart. But he's asking for forgiveness ahead of time before things get too serious, and she realizes he might have just been playing games with her.