to fall deeply in love with someone
глубоко влюбиться в кого-то (gluboko vlyubitsya v kogo-to)
"He fell head over heels for her the moment they met."
"Он влюбился по уши в неё, как только они встретились." (On vlyubilsya po ushi v njoj kak tolko oni vstretilis)
to survive a difficult situation
to go shopping for a long time until you are tired
to protect your computer system or network from attacks
to change the rules or conditions to make success harder
never give up; keep going despite challenges
to start sweating due to fear or anxiety