As with any relationship, communication is the key. Don't harbor any doubts, keep your mind free of wondering about what might be happening. Ask if something doesn't seem quite right. I managed a couple of LTR's that went well. Good luck and congrats.

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As to marriage or celibacy, let a man take which course he will. He will be sure to repent - Socrates

Love is not looking in each other's eyes, but looking together in the same direction - Antoine De Saint-Exupery