They're both worldwide stars and therefore have to spend a lot of time, but with Justin Bieber and Selena Gomez, absence clearly makes the heart grow fonder.The smitten couple were spotted at Pearson Airport in Toronto, Cananda, yesterday shortly after being reunited and they couldn't look happier.Bieber - who was already in his homeland - clearly couldn't wait to see his girlfriend and decided to greet her at the airport, where she'd just flown in from Los Angeles. Once back in each other's company, Bieber and Gomez only had eyes for one another, with the female singer gazing adoringly at him as he led her through the terminal.However, despite arriving at such a public place just so that he could see his girlfriend sooner rather than later, Bieber appeared to be camera shy and wore his hood up at all times.He teamed the sleeveless white hoody with a matching T-shirt and dark blue jeans as he caught up with Gomez.She was wearing the same blue ripped jeans and black boots, that she was seen arriving at LAX in but had removed her beige jumper and held it as she pulled her suitcase along.The pair are set to attend the Much Music Video Awards in Toronto tomorrow night, and will no doubt walk the red carpet together. But fans will be hoping that Gomez's look is more glamorous than the one she sported yesterday.The Wizards of Waverly Place actress was seen walking through the airport in Los Angeles looking far more like a sulky teenager than a red carpet beauty queen.Gomez seemed rather engrossed in her phone, no doubt texting Bieber who was causing a commotion at the TODAY show.Hundreds of female fans flocked to see the Baby singer in action during a free performance in the Big Apple, where he also spoke of his insecurities.Bieber revealed: 'I'm 18 and have a lot of insecurities. At the end of the day, me being in my position doesn't get rid of those insecurities.'I think (this album) is about proving people wrong and going out there and making good music... and performing better than everyone else.dailymail.co.uk