The information is good but the result is not. Online dating sites clearly don't have privacy as a priority, even Ashley Madison, the one aimed at married people wanting to have an affair.
If even the skulker's social-networking site doesn't do HTTPS by default, prevent the mixing of secure and insecure content or use secure cookies, it would be too much to expect other sites to do it. Fortunately for those trying mainly to avoid disappointment, it's not necessary to get, your hopes up.
In security at least, especially in online dating sites, you're on your own.