Blury Photos on a Canon 7D

Select a single AF point and place where you want your subject to be sharp. Do not use auto AF select or zone/area AF for these types of shots. The lower part of the image is a little sharper so it is possible you are focused slightly in front of your subjects.

Yep,

you're in multi-point AF here, and none of them are anywhere near the subjects' faces. Get onto single point and put the active point on the subject's face.

Mind you, nothing in the image is really sharp, so perhaps some MFA is in order too: 1/200 should be enough for sharp images handheld(?) at 50mm, and the problem doesn't look like camera shake.

Which lens? According to the Exif it could be any from a choice of the Canon EF 28-70mm F2.8L USM, Sigma 24-70mm EX F2.8, Tamron 17-50mm F2.8 or Tamron 90mm F2.8; maybe the actual lens in use isn't a great one.

Another thought: how close to the the subects where you? Perhaps you were within the lens' minimum focus distance.

before my 7D I was using a Rebel 300D so I took quite a jump up from that

any jump up should give you better results, not worse

wondering if anyone else has had problems such as this

I have had a lot of bad lenses (of all brands), and with those lenses I often had even worse photos than yours. So your problem is very likely with the lens which is not good. You should always check and see how bad (or good) your lenses are

any tips?

Use a better lens
Better lighted scene

There is likely nothing wrong with the lens. Somehow the focus was way off. The 7D should have micro adjustment so you may need to use this. Try a different focus method first, even manual focus, and if this doesn't work read up on micro adjustment and try that.

In addition to the above, were you shooting with the lens wide open? I'm too lazy to check the exif data right now (actually not at my own computer), but from the above comments, I'm inferring you shot at f/2.8. If so, you need to understand that lenses are not at their sharpest wide open -- even very good lenses. You might want to stop down a couple of stops.

The picture is at f/4.5, so unlikely to be wide open assuming the lens is in the list I wrote above.

any jump up should give you better results, not worse

That doesn't necessarily follow at all - ask anyone who has moved from a 125cc commuter bike to a 1000cc super sport replica: the skills learned at on the little bike hardly prepare you at all for what the big bike can do, and a whole new bunch of skills need to be acquired.

So it can be - and frequently is - with cameras, especially when the photographer is, by her own admission, pretty new to photography.

Everything seems a little fuzzy to me, althought the womans face is a little sharper than the man's face. Even if you shot wide open and you focused properly, something in the image would have beeen perfectly sharp, but I don't see that. There has been some reported cases of focusing issues with the 7D. On the other hand, you did say that your indoor/flash pictures came out pretty sharp.
My guess is that the focusing points were not properly placed on the subject, either that or there was camera movement while taking the pictures.

To test the camera/lens, put it on a solid tripod on a solid surface (not carpet). Aim it at a highly detailed subject, such as a map. Focus manually using live view at 10x magnification. Use a cable release to trip the shutter, while in live view. The results should be fairly sharp, sans sharpening, etc. The point here is to eliminate the equipment as a problem.

Next, try the same but use AF to verify the AF works. It should be close to what you get with live view at 10x, but you might need to try spot AF.

Regarding "any jump up should give you better results, not worse", I agree with Keith. There can be (often is) a learning curve involved.