ABOUT Science of Love series presents Helen Fisher,

‘leading expert on love and attraction’
http://www.themaneater.com/stories/2017/10/9/science-love-series-presents-helen-fisher-leading-/

During December 2004, Dr. Helen Fisher was contacted by the people from Match to create Chemistry, the last innovation at Match, a compatibility matching method.

Please remember: the Chemistry personality test designed by Dr. Helen Fisher during 2004 is IPSATIVE, and not NORMATIVE.
It is only useful for entertainment purposes.
IPSATIVE TESTS ARE OBSOLETE SINCE YEARS.

I remember I had seen two draft papers from Chemistry:
The first clearly shows:
a) that Chemistry has a low successful "1.2.3 MEET in person step-by-step process", low successful first meeting rate for its members.
b) its matching method only reported early stage attraction between prospective mates and after the first meeting; in some persons attraction reduces its level OR worse even, morphs/metamorphoses to rejection. i.e. it is working only for short term mating!!!

The second shows:
a) the high serotonin type (Builder) who is attracted to people like themselves and the high dopamine type (Explorer) who also is attracted to people like themselves, could be looking for a LONG term romantic relationship.
and
b) the high estrogen Negotiator who is attracted to the high testosterone Director and vice versa, could be looking for a SHORT term romantic relationship.

The persons who used Chemistry, meet in person, and after that want to continue dating, is only a very small percentage of them. Less than 6% reach the first meeting in person stage. Of that 6% who reach the first meeting in person stage, not known exactly the percentage of persons who want to continue dating, but I suspect it is very low.

The key to long-lasting romance is STRICT PERSONALITY SIMILARITY and not "meet other people with similar interests".

Chemistry by Dr. Helen Fisher, REDESIGNED
http://onlinedatingsoundbarrier.blogspot.com.ar/2017/05/chemistry-by-dr-helen-fisher-redesigned.html
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NEW and FRESH Online Dating Market 2017 (via Statista)
http://onlinedatingsoundbarrier.blogspot.com.ar/2017/05/new-and-fresh-online-dating-market-2017.html

and remember: The 8 tips to innovate in the Online Dating Industry!
http://onlinedatingsoundbarrier.blogspot.com.ar/2013/12/the-8-tips-to-innovate-in-online-dating.html