plz help if you can, I'll try to return the favor if I can

Well I have a boyfriend, he's great guy I guess. Well we've been dating for 3 months now, but we're two totally different people. I'm a preppy sporty girl, he's a not so popular, sk8r guy, I'm tall he's short and I've got more muscle than he does. I guess I just want a guy that can be like my protector, because i don't have a dad (my parents got a divource, my dad never comes to see me) Well my boyfriend at the moment is really nice and we have a great time together, but he's like "In Love" with me and he's all into this big serious relationship. I dont know if I'm ready for a serious relationship but i know he is.
But the even bigger Problem..... besides knowing if I like him or even love him i really like this other guy. Well the other guy is everything I could ever want and I've liked him for 4 YEARS NOW! Finally he's single and we both like eachother. He's taller than me, muscular, and he treats me like a princess. I really really like him!
So if I break up with my boyfriend it will just KILL HIM! I mean seriously put him into depression, but I'll be happy. Then what if the guy I like breaks up with me after a short amount of time for a stupid reason then I would'be made a HUGE MISTAKE....I dont' wanna make the mistake of my like, but i don't want to regret not doing it for the rest of my life either so please help!

Hmm, i don't think i can help much but i'll try, so i think that you need to go on a dating haitus as u will just to sort out your feelings, not really rejecting one guy or another, just sort through what you think, and if the one guy "loves" you then he will be there still if it doesn't work out with the other guy...make any sense? probably not, because i have a habit of rambling about nonsense. i hope you work things out. toodles take care!
~Rae

wow this is a hard situation to deal with...here's my advice: stick with the guy you're with now but start talking to him and telling him what you're thinking...not about the other guy or how you want a 'protector' but tell him how you're not ready for a serious relationship and that you just wanna be casual with him because you want to date around...it'll hurt, but not as much as if you broke up with him for another guy specifically. and...once you do this, dont ignore him for this other guy...try to actually date around, and not just blow everyone off for this perfect guy...who could definitely hurt you ya know? good luck!