"is it normal that i don't love my boyfriend?"

Here is some background information, I am 21 years old. I have had 2 boyfriends in the past and they were both jerks in the beginning, but I ended up falling in love with them and having a happy relationship (sometimes). Now, I have been dating a 28 year old for the past 3 months. Much older than my past boyfriends, but he is definitely the ideal boyfriend/husband for the future. He is very respectful, good-looking, comes from a good family, and my parents love him. I guess I'm not used to having such a perfect relationship. I enjoy the arguements and asshole remarks sometimes, because I appreciate the good things a man does even more. Does that make sense? Anyways, he wants to spend every minute of everyday with me. It seems like he can't live without me...the same feeling you have when you love someone, but I don't have those same feeling. Sometimes it can be annoying & sometimes it can be sweet. If I don't see him for a few days, I start to miss, but I definitely do not get all emotional about it. I am so used to picking the guy I want, and going after it, but its the other way around in this relationship. He's had his eye on me for a year, and he got me, but I just don't like him as much as he likes me. Is that normal? I don't want to waste his time if I don't end up falling in love with him, especially since he's older and wants to get married within the next 2 years. It's only been 3 months, so I shouldn't worry, right? :|