Honestly, here's what you should do:
1) Create your own dating-themed lander. You get control of the design (for better or worse) but most importantly you have control over the SEO of the site. Make sure you optimize it for mobile as well, I guarantee you are getting more mobile traffic than you may realize. I can also give you a nice redirect script if you'd prefer to go that route.
2) API the join form to a few different sponsors. Inform your users of what you're doing and make it appear that it's for their benefit. "With one form we sign you up to the best dating sites on the web..."
3) Collect the data yourself as well since you're in the mailing game.
4) Orrrrrrr.... Scratch all those ideas and just send it to a landing page like this:
http://www.amateurmatch.com/?ainfo=M...I=&skin=65&i=2 or this
http://www.amateurmatch.com/?ainfo=M...wxMjI=&skin=45 and yes I can add tracking pixels to your pages for you.
5) Profit.