BUFFY: Riley, do you wish-
RILEY: No.
BUFFY: No? You don't even know what I was gonna say.
RILEY: Yes, I do. You wanted to know if I wished you got hit by the ferula-gemina, got split in two.
BUFFY: Well, you have been kind of rankly about the whole slayer gig. Instead of having slayer Buffy, you could have Buffy Buffy.
RILEY: Hey. I *have* Buffy Buffy. Being the slayer's part of who you are. You keep thinking I don't get that, but...
BUFFY: It's just ... I know how ... un-fun it can be. The bad hours, frequent bruising, cranky monsters...
RILEY: Buffy... if you led a perfectly normal life, you wouldn't be half as crazy as you are. I gotta have that. I gotta have it all. I'm talkin' toes, elbows, the whole bad-ice-skating-movie obsession, everything. There's no part of you I'm not in love with.
That is just one instance of Riley telling Buffy he loves all that she is.
It is also just one instance of Buffy failing to respond to Riley when he tells her he loves her.
I really don't get the the theory that he was threatened by her physical strength. To my memory, he was only ever in awe of it. Attracted to it.
"As You Were"
RILEY: I was terrified about seeing you again.
BUFFY: Well, I'm sure my incredible patheticness softened the blow for you.
RILEY: I don't know what you're talking about.
BUFFY: Riley, please don't patronize-
RILEY: Hey! You want me to say that I liked seeing you in bed with that idiot? Or that blinding orange is your very best color? Or that that ... burger smell is appealing?
BUFFY: (upset) You smelled the smell?
RILEY: Buffy, none of that means anything. It doesn't touch you. You're still the first woman I ever loved ... and the strongest woman I've ever known. And I'm not advertising this to the missus ... but you're still quite the hottie.
BUFFY: You know, it goes away after many bathings.
RILEY: (laughs) This isn't about who's on top. I know how lucky I am right now. I love my work, and I love my wife.
BUFFY: I know. And I kinda love her too.
RILEY: So you're not in the greatest place right now. And maybe I made it worse.
BUFFY: No.
RILEY: Wheel never stops turning, Buffy. You're up, you're down ... it doesn't change what you are. And you are a hell of a woman.
BUFFY: (deep breath) Riley, that night... (Riley just looking at her) I never got the chance ... to tell you ... how sorry I was. About what happened between us.
RILEY: And you never have to.
These aren't the words of a guy threatened by strong, powerful, independent women.