HELP does he like me #2?????????????

Ok this one is a tad differnet from my fist one... Today my crush signed my yearbook, ok? Each time he signed someone's book, he wrote "Sean is cool" in them, and kinda just tossed the books back at them. But in mine, he closed the book and handed it back to me. Inside he had written "Sean M is cool (i hope)" And he underlined his name. What does this mean? Please tell me your opinion.