When you love each other truly and most sincerely, why you should fight on issue like this?! This gives me a feeling that love that you are portraying in this mail is not the same from his side. If he really loves you then these things should not matter to him, once you have clarified.
You need to find out that whether he is loosing interest in you. This is very common when sex is involved in premarital relationship.
You need him at any cost; this shows your emotional dependence on him. Try to explain him every thing very honestly, he should understand if he is sensible and interested in you. Otherwise start preparing yourself for being dumped. Attempting suicide is not a solution to this. If you still have an urge to kill yourself as a solution, you need to seek professional help of Psychiatrist.