It might be helpful to understand and describe different kinds of love.
Familial love is the love you have for a blood relative, agape is the love you have for friends and humanity, while eros is erotic love between lovers.
So yes, you can love without sex. If you are asking can you have eros love without sex? By definition, no. Can one be celibate in a relationship where eros is present? Yes, it's called virginity or abstaining until marriage.
But to be in erotic love is to eventually have intense desire to express that love sexually. So, if you are young and want to remain a virgin, the worse thing you can do is to allow yourself to 'fall' in love. Rather, keep love distant until you are ready for it, and then choose to 'grow' into love. Remembr, falling hurts!