Sure, we can help you with that. Personally, I'm fond of Sonnet 116:
It directly addresses marriage, and promises to love true, and to love forever, even as you both age. It too is written from a man to a woman, but the only part that really identifies the speaker as male is the last line:
I never writ, nor no man ever loved.
That line can be edited:
I never wrote, nor woman ever loved.
This sonnet is my favorite because it makes love a forever thing, like a star that you use to guide you. That's romantic.