My advise for
and op
In such a stage as you guys describe, love does seem quite fleeting.
Its hard to find someone that you truly love. It sucks that you guys have to play guessing games etc. It's not something I can relate to since I've been married for a while.
What i can say is that having someone to love is a big deal! And it's worth all the heartache. Most good things require effort, and even more effort for it to become better and better over time.
Its not always easy. Sometimes you have to look after yourself too. Take good care of yourself so you won't have any excuse to be resentful.