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 fail to keep a promise
to smile broadly because of happiness
to approach the last possible moment before a deadline
to help someone in trouble
to express oneself in a way that is easy to understand
to take an indirect route