I've researched a few just to see whats out there and I think they all suck if you want something decent.
If you want your own dating site, you should look at a medium-to-big investment and getting it custom done.
We are releasing in January our new method for owning yor own dating site as a partner, which has numerous large differences from your standard co-brand offer.
Men.com jmped on this first and everyone I explain it to get very interested in it
You would have complete control over your design, emails, etc..using our Smarty templating system, free usage of our affiliate program to promote your site (with tools to upload promo content for your affiliates to use to promote YOUR site), free unlimited hosting, 70% revshare and more.
Hit me up to discuss if you are interested, or just wait for the full details to be released in January, if you don't want all the pains and costs of getting your own site up, this is as close as you'll get!