"I know." But that still didn't put Wilson's fear to rest as he followed his lover to the kitchen. "I still get worried. People come and go from this place all the time." And if he were to lose House...well. He wouldn't be sure what to do, frankly. Little did he know House would leave for long periods of time during fights later on in their relationship. Had he known that would happen he would have to wonder how his older self managed it.
At this point, he'd be plagued with constant worry. Thankfully, though, he was unaware of any future fights and just had House back.