Five Worthy Couples

http://trivenijournalindia.com/fiveworthycouplesinthemahabharatajan78.htm

1. Surya with Prabhavati, 
2. Agni with Swaha, 
3. Vasava with Sachi, 
4. Chandra with Rohini, 
5. Yama with Urmila, 
6. Varuna with Gauri, 
7. Kuvera with Riddhi, 
8. Narayana with Lakshmi, 
9. Sagara with Jahnavi, 
10. Rudra with Rudrani, 
11. the Grandsire with Saraswati, 
12. Vasishtha's son Saktri with Adrisyanti, 
13. Vasishtha with Arundhati (called also Akshamala), 
14. Chyavana with Sukanya, 
15. Pulastya with Sandhya, 
16. Agastya with the princess of Vidarbha Lopamudra, 
17. Satyavan with Savitri, 
18. Bhrigu with Puloma, 
19. Kasyapa with Aditi, 
20. Richika's son Jamadagni with Renuka, 
21. Kusika's son Viswamitra with Himavati, 
22. Vrihaspati with Tara, 
23. Sukra with Sataprava, 
24. Bhumipati with Bhumi, 
25. Pururavas with Urvasi, 
26. Richika with Satyavati, 
27. Manu with Saraswati, 
28. Dushyanta with Sakuntala, 
29. the eternal Dharma with Dhriti,
30. Nala with Damayanti, 
31. Narada, with Satyavati, 
32. Jaratkaru with Jaratkaru, 
33. Pulastya with Pratichya, 
34. Urnayus with Menaka, 
35. Tumvuru with Rambha, 
36. Vasuki with Satasirsha, 
37. Dhananjaya with Kamari, 
38. Rama with the princess of Videha Sita, or 
39. Janardana with Rukmini.

Source
http://www.sacred-texts.com/hin/m05/m05117.htm