Yes, I totally agree with the Roy x Riza ship. They've been working together for so long, and you know they both have feeling for each other.

Now do I agree with the Edward x Winry pairing? Hmm.. How do I put this.. Yes and no?
Welp, yes, because they've known each other practically since they were babies. And, you know, long-term friend-relationships are always cute. And they fit one another. :3
But NO because it PISSES me off! If Winry definitely gets Ed, I'd be extremely jealous. I might just kill her. (Haha, jk..)
Yeah, yeah, say what you want - "It's just a manga/anime series, it's not real.." Blah, blah, blah.
While I'm quite aware of this, I would still be
EXTREMELY jealous (as said before), angry, and upset if somebody else got Ed!! ><
Hahaha, it's sad, but true. XD
A ship I personally like is the Scar x Lust pair, shown at the end of
The Conqueror of Shamballa.
It's random, and doesn't have any part in the anime/manga whatsoever, but it's still a good one.
Mainly because Scar always loved the woman Lust used to be since he was a teen, you know?
But it was his brother who was going to marry her.