Why does Raina transfer her love from Sergius to Bluntschli?

Raina falls in love with Bluntschli when she follows her heart rather than the expectations of society. Raina and Sergius are as delusional about love as they are about war, seeming to have derived their understanding of romance primarily from Byronic poetry. They celebrate each other with formal and pretentious declarations of “higher love”, yet clearly feel uncomfortable in one another’s presence (25). The couple, with their good looks, noble blood and idealistic outlook, seem to be a perfect match, but in George Bernard Shaw’s world love does not function as it does in fairy tales. Instead Raina falls for the practical and competent Swiss mercenary that crawls through her bedroom window and Sergius for the pragmatic and clever household maid. Love does not adhere to conventions regarding class or nationality. Moreover, love is not some abstract expression of poetic purity. Love in Arms and the Man is ultimately directed at those who understand the characters best and who ground them in reality.