The mental and physiological condition of a male during which an impulsive desire to achieve reproductive success, or more commonly just the desire to engage in intercourse, overrides essential mental processes, such as the ability to effectively work or the ability to think rationally. Other effects may include disorientation and or sweating.
This occurs with varying frequencies and intensities in males; some may enter "love mode" after long periods of abstinance from sexual activity, others may constantly or never experience it. Most commonly, intense "love mode" occurs more often when a male is in direct contact with a female, or whatever else may be an object of arousal.
Salient examples of "love mode" include, but are in no way limited to, the state of mind of a male engaging in a booty call with a tramp, slut, skank, cum dumpster, skin scum bag, floozie, or whore (of the amateur variety) - or when a male resorts to paper bagging an otherwise undesirable girl. "Love mode" frequently, though not always, occurs when under the influence of various substances, including alcohal, cannabis and MDMA.
A stupid slang term for being so horny that you can't think straight - so horny you'd do, fuck, tap, nail, bang etc girls far below reasonable standards. You might totally forget about condoms, protection or other contraceptives.