Gordon was wiping headcrab blood from his suit when Barney came inside the room and got aroused, but was too shy to say anything.
When Gordon went to sleep, Barney put something in his drink, and when Gordon woke up to take a drink from the spiked drink, he became woozy and collapsed on the floor.
Barney scooted over and started to sensually touch Gordon all over his body.
A few moments after the sensual touching, Barney took Gordon's crowbar and put it in Gordon's behind to stimulate the prostate.
Gordon began to moan in his spiked drink induced stupor, and Barney started touching himself while pushing and pulling the crowbar.
After a few moments, Barney climaxed and ejaculated on Gordon's suit and laid down besides Gordon, panting, hand on chest.
After panting for a few minutes, Barney got close to Gordon and said 'I love you' and kissed Gordon on the lips.
Barney got up, pulled the crowbar out of Gordon, wiped Gordon's chest, and walked out.
After a while Gordon woke up, confused, he felt a tingling sensation in his rear. A radio transmission from Alyx soon followed, warning of encroaching Combine forces.
Gordon picked up his crowbar which lay on the floor and walked out the room.