No...the original Valentine (or as he is better known as "St. Valentine"), was NOT in love himself, but believed in love.
Valentine was a 3rd Century priest. He is someone who believed in love, and helped facilitate people in love who wanted to marry when it was forbidden. The Emperor at that time, Claudius, decided that more men would join his army if they weren't married. So he passed a law to prevent young men from getting married. This was based on the hypothesis that unmarried soldiers fought better than married soldiers because married soldiers might be afraid of what might happen to them or their wives or families if they died. Young people thought his new law was cruel. The priest Valentine thought that the law was very unfair. Valentine kept on performing marriage ceremonies - secretly, of course. It must have been quite exciting. Imagine a small candlelit room with only the bride and groom and Valentine. They would whisper the words of the ceremony, listening all the while for the steps of soldiers. Valentine died on February 14 and was made a saint two hundred years later! Valentine became the patron saint of love, young people, and marriages (and also of plague, epilepsy, and beekeepers!).
Now we all celebrate St. Valentine's devotion to those in love!