Things in the X-Files that have no platonic explanation:
Scully's reaction to Pheobe Green. Scully's first dick joke "Oh is THAT what you were extending?"
Worm checking in Ice like they were trying to tear each other's clothes off.
Mulder wearing Scully's cross when she was missing. He didn't keep it safe, he wore it. On his body. Close to his anatomical heart.
The hug in Irresistible. The chin tip, the kiss on her head. That's a lot to comfort a "coworker."
The shower scene in Die Hand Die Verletzt. Mulder rolls his whole ass body over hers to protect her. While wet. And tied up.
"You never draw my bath" in Revelations. Not an appropriate thing to say to a coworker. Ever. But it's Mulder so it's ok.
Scully's reaction to Dr Bambi.
Scully's reaction to Detective White.
Mulder's observation about Scully's body in Quagmire.
When Mulder voices that he's turned on by Scully's ability to identify a P52 Mustang.
The penlight joke in the cut scene from Home. Is this canon? I count it.
Mulder's jealousy of Ed Jerse.
Mulder being the first person Scully calls when she gets her diagnosis. Her journal entries.
Scully not pulling away from Eddie Van Blundht when he tries to kiss her
The sleeping bag joke in Detour.
Mulder's proposal in Chinga.
Mulder asking if his "boyish agility" was turning her on.
The "you're my one in five billion" line is a lot to say to a "friend."
Scully's jealousy of Fowley.
Mulder kissing 1939 version of Scully then confessing love to 1998 version of Scully.
The ghosts saying Mulder and Scully have "intimacy through co-dependency." The ghosts are correct.
Scully's "switch has been flicked" monologue.
Everything Mulder says and does in Arcadia.
Scully's reaction to Karin Berquist.
Mulder's reaction to Phillip Padgett.
Philip Padgett observes that "Agent Scully is already in love." Not "Agent Scully *loves him*". Agent Scully is IN love.
"It's not a bad piece of ash huh?"
Scully's journal entries in Africa.
Egregiously long forehead kissing and lip brushing.
An extra toothbrush in Mulder's bathroom in Orison.
Messy hair and "he's had a rough night" in Sein und Zeit.
"Not in the widely understood definition of that term."
Dressing in Mulder's bathroom, leaving Mulder sleeping in the bed with no evidence of pyjamas on his body.
Hand Holding on a film set, going on a date using the bureau credit card.
Bed cuddling in Bellefleur. Wearing the same clothes the next morning as you were wearing when you went to your partner's motel room.
Asking your partner to have a child with you.
Having a child with your partner.
Living together and sharing a bed.