Basically, keep doing what you've been doing. She engaged in a relationship with you because of the things that you've been doing together. All you gotta do is make sure you don't let it die out. Don't allow yourself to take her for granted and start getting lazy about certain things. And once in a while, adding something spontaneous and special is the key to avoid the relationship to become monotonic.
And do not be jealous. Let her live her life. Don't ever keep her under surveillance, don't ever forbid her from doing something she wants, etc. This shows TRUST, which is key for relationships. Without the trust, there is no love and without the love, there is no relationship . . .
Quote:
Caring less
I challenge you to keep a relationship alive for more than 2 months by 'not caring'.
Of course you need to care - it's your relationship. It's your commitment to a human being of the opposite sex. You NEED to care and you NEED to be ambitious about it.
If you stop valuing her for what she means to you and what you mean for each other - you will lose her very fast.