I agree they are all fun and romantic, so that's great. A lot of people who are plenty technically proficient can't get a natural look out of their clients.
A few thoughts of mine.I honestly don't care for the processing on any of them, I think it's pretty muddy so I won't comment on processing.
1 - I think that the background here is pretty distracting. Can I ask why you shot at such a small aperture? I think if it had been shot with a shallower DOF and shot where you were more down at the couples level, it would have been improved.
2 - I do like the way the wall and the fence frame the couple. There are some harsh hot spots, but for the most part they are in the shadow, so it's not too terrible.. Again though, I think a shallower DOF would have improved it.
3 - Same comments as above. I like the overall composition here, but the light is pretty hard and I think a shallower DOF would have improved it.
4 - Unfortunately I feel like his hands are dirty (so is her thumb, unless that is the processing) and her nails are a mess. I know you can't help that, but it takes away.
5 - Light is really hard here.. Also, I feel like they are really centered with a lot of empty space around them, perhaps a tighter crop would be better?
6 - The hard light really bothers me, which is a pity since their expressions are very sweet.
7 - This is very sweet and romantic, and while there are some hot spots, the lighting on them is fairly even, they just look a bit dark. I think some careful dodging would really improve it.
8 - Same here, they seem a bit dark and the background has darkness too. I know when you've got light and dark patches the camera metering can be a little off, but it is pretty close.