Somewhat, but the bottom line is that the burden of proof is on you to show that you intend to return to the UK. That's hard when you have a strong tie in the US (a romantic relationship) and none in the UK (no job or school). So, on the one hand, showing that you have a history of doing what you say you do is helpful to you, but on the other, the more time you spend in the US, the stronger you're making your ties to the US and that's not helpful to you.