Gulenko's romance styles are defined by the irrational element in the individual's Ego functions:
Aggressor: Se in EGO block: SLE, LSI, SEE, ESI
Victim: Ni in EGO block: EIE, IEI, LIE, ILI
Caring: Si in EGO block: ESE, SEI, LSE, SLI (I prefer the term "Nurturer" for this style.)
Childlike: Ne in EGO block: ILE, LII, EII, IEE (I prefer the term "Infantile" for this style.)
"Romance styles" refer specifically to romantic/sexual interaction -- displaying physical attraction, interest, and desire, flirting, and sexual behavior present in romantic relationships. These styles apply much less to relationships between friends or business partners. Bolded comment added by @Kheledon.
Socionics - the16types.info - Socionics Romancing Styles