Justin Bieber's birthday date with new girl Selena Gomez ruined by paparazzi
The couple were caught in the crowds of photographers as they left an LA restaurant, with Selena covering her face - sparking rumours she'd been accidentally hit.
Naughty teen heartthrob Beebs then stuck up his middle finger to the cameras.
'Had a great bday and at the end of the night we got surrounded by paps and i reacted in a way i know better,' Justin Tweeted on Wednesday. 'Im sorry.
'It's not always easy but i know better than to react in anger.
'I will make my mistakes but i promise 2 continue 2 grow with u and
try 2 do.
'Life has it's ups and downs but u guys r always there 4 me.'
The couple were also snapped kissing and cuddling on a shopping spree, with Justin - who's now in the UK for his tour - whipping out his credit card in Beverly Hills' Louis Vuitton store.
A rep for Disney star Selena told People there is 'absolutely no truth' to the rumours she'd been hit.