biased	you think a certain thing and you will always support it
set boundaries	make personal rules with someone you live with (or have a relationship with)
secondhand smoking, passive smoking	when you don’t smoke, but inhale the smoke from someone else’s cigarette
withdrawals	symptoms you get when you quit doing something addictive
a fling (informal)	a short romantic relationship
platonic relationship	friendly relationship (nothing more)
superficial	fake
be shallow	to only care about superficial things
build confidence	become more confident
titular	mentioned in the title of a book or film
superficially	in a manner that appears to be a certain way until it is inspected more closely
half-interested	only a bit interested
subterfuge	a plan or way of acting that is meant to deceive someone
preconception, notion	an idea you have before getting enough information to really understand something
marginalise	make someone or something feel less significant or take away their power
minutiae	the small and usually uninteresting details of something
minute	tiny
affinity (have [an] affinity for)	a strong feeling of understanding and interest in a particular thing or person
dreary	boring
trudge	walk slowly, heavily
bear with someone	stay with someone (in a conversation)
careless with + stg.	be bad with something	
careless of, careless about + ing.	don't care about something	
meddle in	try to influence something
in possession of + stg.	have something
advise someone of + stg.	notify someone of something
support in + stg. (decision)	support after he/she has done something
have in hand	have under control
blow up at	lose temper
completely baffled	speechless
coincide with	match up with (in time)
on the spur of the moment	without any planning beforehand
blow his/her top	lose temper
cruel to someone	cruel 
cut from the same cloth	similar
cater to someone	bring foot
pleats	folds in a single sheet of material
regal	royal