In the concluding lines of "To Lucasta, Going to the Wars" the speaker comes right out and says that he loves Lucasta; the poem is also full of words normally associated with love and affection (adore, embrace, sweet, dear). It is not only love for a woman that is a theme in this poem; love of honor also plays an important part, and appears to supersede love for a woman. What can we say? It's complicated.
"To Lucasta" suggests, at certain moments, that love and war are very similar. In fact, that's kind of the point of the whole shebang.
The speaker describes a very pure form of love and implies that such a sentiment is meaningless unless we are willing, on occasion, to make sacrifices.