Matt Smith's girlfriend has always been a hot topic online. For a couple of years now, everyone seems to be quite interested whether the 31-year-old actor is seeing someone or not.

Just this April, Matt Smith girlfriend rumors once again surfaced following his reunion with his 'Doctor Who' co-star Karen Gillan. It can be noted that since the inception of their show, Smith and Gillan were rumored to be dating off-cam.

The reunion of the alleged ex-couple took place at the premiere of Karen Gillan's latest movie 'Oculus,' where they were spotted enjoying each other's company.

According to KpopStarz, Gillan reportedly broke up with her then boyfriend Patrick Green, a photographer, after exclusively seeing each other for six straight years.

Gillan and Green were notable private about their romance; however, their split was highly publicized since rumors that the actress was cheating with her 'Doctor Who' co-star Matt Smith surfaced.

Both parties never addressed the issue, and so several media outlets speculated that it was indeed true. However, all of the romantic gossip between Matt Smith and rumored girlfriend Karen Gillan dissipated when insiders revealed that Gillan has a new boyfriend and it's not Smith.

Tracing Matt Smith's dating history, he has dated Billie Piper in 2006, and the two parted ways a few months after.

In 2009, Matt Smith was romantically involved with Mayana Moura, but their relationship didn't actually last that long.

To date, the only woman who made it to the 18 months mark in Smith's life was Daisy Lowe, whom the actor dated from 2010 to November 2011.

Interestingly, reports claim that since their split, Matt Smith was trying his best to "rekindle their relationship."

FashionStyle reports that they were spotted together at the GQ awards in 2013, which further ignited the issue that the two may have already been back together.

However, Matt Smith admitted the same year to British radio presenter Jonathan Ross that he didn't have a girlfriend that time.

On the other hand, Lowe was also seen dating another man the same year. She and her mystery man were spotted "walking along London's Hampston Health" facility.

As of late, Matt Smith is reportedly not seeing anybody as the single actor has opted to focus his attention on his career instead.