welcome back, Deler.
Haven't seen ya' for a while.
In a way, I feel like I can somewhat understand where you are coming from. If you've had some experiences in the past regarding sex that you aren't too happy to look back on (maybe some regret?), it's pretty normal to think twice about this stuff. Wanting to make sure that the special person is right, that the feelings between the two of you can stand without sex.
The only part I'm not too sure about is "Sex in a relationship will mean we are no longer meant to be and is the beginning of the end."
I know you have some religious beliefs. Not to sure how you view sex in general (is it a sin? something to be ashamed to want?).
You may one day fall in love with someone, and after a period of time of blissful love without sex, you may want to make love to her.
I can't see anything wrong in that. It can be a beautiful thing.
It's all about circumstances. I do wish you happiness: if this choice does that for you, then whos to say different.