abusive relationship addiction adolescence ads adult attachment affection age age-gap aggression alcohol alternatives announcements anxiety apologies arguing arousal attachment attraction attractiveness attribution avoidance bachelor/ette birth control birth control pills bisexuality body body image book brain breakup breast casual sex celebrities cell phones charts cheating cheating/infidelity chemistry children china classic study close relationships closeness cnn cognition cohabitation college commitment communal communication conferences conflict conflict resolution contrast effect control coping correlation ≠ causation cortisol couples courtship creeping cross-sex friendship crush cuddling culture cybersex date ideas dating dating scripts death deception decision making depression destiny dieting disapproval divorce domestic violence eating embodiment emotions equality ethiopia evolution evolutionary psychology ex-partners expectations expressivity facebook facial attractiveness falling in love family fatherhood female orgasm femininity fertility fighting finances first date flashback flirting fMRI forgiveness friends friends with benefits friendship gay men gender gender differences gender roles gender similarities gift giving gifts growth happiness health healthy relationships heartbreak helping behavior holidays homosexuality hooking up hormones how i met your mother humor IARR ideal partner idealization implicit theories impression formation impression management infants infidelity infographic information-seeking insecurity intelligence interdependence internet interview intimacy intrusive behavior investment model investments iPhone app jealousy jersey shore journal articles journal of social and personal relationships kardashian kids kissing language lesbians list long term relationships long-distance relationships love love at first sight mad men marital satisfaction marriage masculinity mate guarding mate retention mate selection mate value math mating media media effects meme memory men and women mental health meta-analysis misattribution money monogamy mood mothers motivation movies multiple partners music music video narcissism need to belong needs neuroscience neuroticism neurotransmitters nonmonogamy nonverbal behavior nostalgia objectification okcupid on-again/off-again relationships one night stand online dating open marriage orgasm ovulation oxytocin pain paradox of choice parenthood parenting parents partner matching passion penis penis size perception personal relationships (journal) personality pheromones physical attractiveness physical health pickup lines podcast politics polyamory pornography positive illusions post-dissolution friendships power prejudice priming privacy pronouns proximity psychological science (journal) psychopathology radio reality tv Recap red regret rejection relationship advice relationship beliefs relationship change relationship decline relationship development relationship initiation relationship length relationship maintenance relationship matters (podcast) relationship meme relationship satisfaction relationship status relationship violence relationships research methods responsiveness romance romantic partners royal family ryan gosling sacrifice same-sex marriage same-sex relationships satisfaction science science of valentine's day secrets secure security seinfeld self and identity self-control self-disclosure self-esteem self-expansion self-presentation self-regulation sex sex differences sexism sexting sexual activity sexual arousal sexual attraction sexual behavior sexual desire sexual orientation sexual pleasure sexual satisfaction sexuality similarity single single parenting singlism snooping social comparison social connectedness social media social networks social pain sociosexuality soulmates speed-dating spsp stalking statistics status STD stereotypes stress summer support swingers technology teenagers terror management theory testosterone the big bang theory the simpsons threat tips top 10 touch travel true blood trust trustworthy tv show twilight uncertainty unhealthy relationships unrequited love valentine's day video violence waist-to-hip ratio warmth wedding weight weiner well-being women women's sexuality work