I really love Arthur/Gwen, but I can’t forget that Lancelot saw Gwen first and that Gwen loved Lancelot first. Arthur is only the second choice. Gwen fell in love with Arthur because Lancelot wasn’t there at Camelot. That’s why I can’t see Gwen/Arthur as a OTP. I’m sure Gwen/Lancelot will get together in their next lifetime; they are destined to be together.