Led Zeppelin’s pinnacle of romance would have to be “The Rain Song” on Houses of the Holy. The Doors equivalent would probably be “Indian Summer” from Morrison Hotel. Neither is really an uptempo rock song, but “The Rain Song” is pretty climactic.
Kiss has about a million songs that mention love, but my memory cannot bring any up that seem to be about romantic, not physical love, besides “Beth”. I dunno if that would be a good choice, since if you know the backstory, then it is kind of depressing.
Pink Floyd’s songs were usually about Sid’s madness, or Roger’s dad dying in WWII, and I can think of none that would qualify as love songs. I am not familiar with anything Metallica did past '88 or so, but they just weren’t romantic guys back then.
If you do not mind using an older song, Bo Diddley’s “Sweetest Thing” from Go Bo Diddley just plain rocks, it has that Bo Diddley beat!
The Beatles have a lot of love songs, if you and yours have not heard them too much. “Oh! Darling” from Revolver would be good. It is all about devotion. Warning: The Beatles are often far too bittersweet. They longed for their old girlfiriends a lot. Reminding the Bride that the Groom was ever alone in the presence of another woman, at any time in his life, may be a bad idea on this day.
If you think that one noise rock song would not be bad “Sugar Kane” from Sonic Youth’s Dirty would work, and it sounds a lot more like a regular rock song than the types of songs Sonic Youth is known for.
I did the same sort of thing for my wedding a few years ago, I have a pretty large record collection (about 500 albums, 400 or so CD’s). Maybe it was just because of my tastes in music, but it was a tough compilation to make. Since most rock is based off of the blues in one way or another, love is usually expressed in rock by its absence, or with the physical aspects of love being the primary concern. I always liked the music partly because it was honest, but that is not what the relatives, or the bride wants to hear at the wedding. I had to include a lot of songs from other genres (e.g. Country, “Ring of Fire”) to make a 90 minute compilation.
A lot depends on the expected audience. If it is just for him, “Inna-Gadda-Davida” might work. Heck, it might work for the right reception, it would not have for the group of mostly Baptists and Methodists that I was planning on entertaining. I think including it in the ceremony would be right out, just because it would be too much like a Simpsons episode to make anyone comfortable.
I guess that I would have to ask you what were you going to do with the list to give you better suggestions. Hope that it helps.