Hey,
Congratulations! I've found a few good places for sweetheart stuff.
I've bought my sweetheart (& now fiancee) two shirts...
http://cgi.ebay.com/Beta-Theta-Pi-Be...item3ef9fdcd92
I bought this one in pink, and she likes it a lot.
I also got a "Beta Rose" sweatshirt from Alpha House (if you've been to the AO in Oxford, it's a store right off High St across from the Alpha Chapter). The sweatshirt has a very nice design, with our rose and 'Beta Sweetheart" in cursive beneath it. If you're not near Oxford, you can check out their website at
www.alphahouse.com
If anyone's found others, feel free to share!