You can find a lot of marriage tips at: http://www.LongMarriage.com
Find a guy who is 17 who is interested enough in you to take the initiative and call you just to see how you're doing, and who buys you little things just because he thought you'd like it. In all honesty, no one at 17, and I don't care who you are, no one at 17 knows what love is. Love is something that comes later. This is the time for learning how relationships work. Once that's done (which should be in your early to mid 20's), then you can consider finding someone to love. Relationships at your age work only once in a hundred times. And don't go for 19 year olds until you're at least 18.
ANYTHING IS OSSIBLE , ITS JUST WEATHER YOU CAN DO IT OR NOT. IF ITS WHAT YOU BOTH WANT YOU CAN MOVE OUT AND WORK AT THINGS SLOWLY , MAYEB HE JUST STOPED AND TOOK A LOOK AT ALL THE CHANGES TAHT HAVE BEEN MADE IN THE PAST TWO YEARS TAHT HE IS JUST NOW NOTICING. HE MAY BE GOING THREW IT DIFFERENTLY THAN YOU ARE. YOU MAY BE COMFORTABLE WITH IT BUT HE JUST MIGHT BE A LITTLE SHOCKE DAND SCARED AT HOW FAST THINGS ARE MOVING. BUT THIS SOEMTIMES IS A GOOD THING, HE COULD BE TAKING A BREATHER BEFORE SETTELING DOWN...
The most common is a simple peck on the lips. Basically, you lean your head one way, and your boyfriend leans his the other way and your lips touch for a short couple seconds. If you're ready to move on from that, you can try kissing for longer periods of time, than eventually try french kissing or "making out". In this type of kissing, people often use tongue and get messy.
You can open your mouth a bit or just keep it closed. One magazine says that if boys suck on your lower lip it means that they really like you. So girls, hope for that, and guys, if you want your girl to know that you really like her, do that. If you want a kiss to be super romantic, touch a bit. Girls, touch his shoulders from the front, meaning that you bend your arms in front of you and place your hands on his shoulders and guys, hug their waist or put your hands on her shoulders or arms. Girls will like that (well, at least me).
Boys put your hands around her waist or up a bit up from her waist it will show her you like her and your not messing around. If your a girl put your hands around his neck so your hand are kind of touching just below his neck and in between his shoulders.
Personally, I'd keep talking to him. Don't make him uncomfortable but keep talking to him when you do see him. Maybe he will change his mind. And remember, always follow your heart It doesn't matter if it IS childish, it certainly seems like a good idea to stay away from that kind of guy. He's probably suffering under the delusion that makes him think that he's "too cool". If you leave him alone you'll be better off. Understand that if you don't show interest in him he might find you irresistable. But now that you know what he's like, you can recognize him for what he is and maybe find a guy who is far more worthy of you. Ignoring him is still putting too much energy into the guy. Just nod his way and pass him by. You have more to do in life!