I ranked all the winners a while ago that I have watched, from likable to least likable. Spoiler blocks are around international winners.
1.>!Joe Jer and Zabrina<!
3. Nick and Star
4. Colin and Christie
5. Nat and Kat
6. >!Bar and Inna<!
7. >!Step and Kristen<!
8. >!CJ and LJ<!
9. TK and Rachel
10. Tammy and Victor
11. Meghan and Cheyne
12. Uchenna and Joyce
13. Rob and Brennan
14. Rachel and Dave
15. >!Sam and Paul<!
16. Kisha and Jen
17. >!Adrian and Colin<!
18. >!Vince and Sam<!
19. >!Tim and Rod<!
20. Kelsey and Joey
21. Dan and Jordan
22. >!Tim and Tim<!
23. Linzes
24. >!Tyler and Nathan<!
25. >!Shane and Andrew<!
26. >!Adam and Courtney<!
27. >!Daniel and Ryan<!
28. >!Richard and Richard<!
29. >!Gino and Jesse<!
30. Chip and Kim
31. Flo and Zach
32. >!Brendon and Jackson<!
33. Dana and Matt
34. >!Morten and Trulls<!
35. Jason and Amy
36. Laura and Tyler
37. Bates and Anthony
38. >!Juan Carlos and Giovanni<!
39. Ernie and Cindy
40. >!Parul and Maggie<!
41. >!Lily and Jan<!
42. Dave and Connor
43. Will and James
44. >!Mickey and Pete<!
45. Josh and Brent
46. Tyler and James
47. >!Liu Weiwei and Lei Sheng<!
48. Brooke and Scott
49. >!Charlie and Rachel<!
50. Kim and Penn
51. Reichen and Chip
52. BJ and Tyler
53. >!Matias and Tamara<!
54. >!Catherine and Craig<!
55. >!Anthony and James<!
56. Chris and Alex
57. Cody and Jess
58. >!Matt and Phoebe<!
59. Eric and Danielle
60. Freddy and Kendra