Leave it to none other than Rip Hunter to interrupt what was turning out to be a perfectly good time.
Not that Len immediately acknowledged who it was barging in on the two of them. Flight or fight kicked in first, naturally. Usually he was more aware of his surroundings but a lap full of horny Barry Allen was a fair enough distraction. He felt when Barry shot up (appropriately) like a bolt and Len was right there with him, arm securely around his middle because he was nothing if not a possessive and protective bastard about things he considered his. People included, naturally.
His free hand meanwhile when instinctively for his cold gun which was never out of sight or out of reach. Some old habits didn't die and Len was never one to let himself be caught without a weapon handy. The gun was active and pointed at his teammate before he properly registered him as not exactly a threat. Just annoying.
"The only conversation I'm interested in having is the one where I ask why I shouldn't freeze you where you stand. Did they forget how to knock in the future?" It was less genuine ire and more annoyance. Despite his threat Len was already powering down the gun and let it rest on his shoulder. He'd only caught the last of what Rip had said. Which felt like an accomplishment, really, considering his brain hadn't wanted to go very far past 'sex sex sex' only a few moments ago.
"Might want to pick your jaw up off the floor, Captain."