How can i know my wife love me?

she have with me,she call me, i call her, since i fall love with her she did'nt ask me to buy her airtime or she did'nt ask me money,the other things she we don't use condom when we have , i didn't heare the changes,one more things i never found her walkin with other boy, found a message of love in her phone,she respect me,trust me,give me good behaviour,honestly,gorgeous