My boyfriend of 8 months suddenly wants to abstain from until marriage?

Long question!!! It may well be that he has "some to his senses". then again, it could be something else. The reason he gave, in any case, deserves your respect as it could be true. I would suggest taking it at face valeu for the time being and ride it out... time will let you know if it's the real reason or not. I hope it is, for your sake, darlin'..