bromantically

The story

1. Proto-Indo-European*bʰréh₂tēr
2. Proto-Germanic*brōþēr
3. Proto-West Germanic*brōþer
4. Old Englishbrōþor
5. Middle Englishbrother
6. Englishbrotherclip.
7. Englishbro
8. LatinRōma
9. LatinRōmānus
10. Latinrōmānicus
11. Vulgar Latinrōmānicē
12. Old Frenchromanz
13. Old Frenchromaunt
14. Englishromant
15. Englishromantic
16. Proto-Indo-European*h₂el-
17. Proto-Indo-European*h₂élisder.?
18. Proto-Indo-European*leyg-
19. Proto-Germanic*līką
20. Englishromantically
21. English todaybromantically

Blend of bro + romantically.