"mon portrait" means 'my portrait' in French. It can be a real painting or a written or spoken description.
'mon fils' means 'my son' in French.
my buddy, my pal
"je rate mon amour" isn't a French phrase. This is an automatic translation of "I miss my love", but the actual meaning in French is "I fail my love"
ma boule (feminine) means my ball / bowl in French.
mon coeur means my heart in French.
mon Dieu means 'my God' in French.
'mon fils' means 'my son' in French.
Mon patron is "my boss" in French. In French, the word is never used to mean 'customer'.
mon cadeau means my present / my gift in French
mon père - my father
Mon oreille (feminine noun) means "my ear" in French.
The French phrase "mon frère" means "my brother" in English.
It is a combination of French and Spanish, and means "my" (mon=French) and "saint" (santo=Spanish)
Mon means 'my'. "Pejeuax" doen't exist in French.
Mon cœur means 'my heart' in French.
Mon lit (masc.) means "my bed" in French.
"être" is the infinitive for "to be"; "mon amour" means "my Love". If the message was "be my Love / be my loved one / be mine", the French expression would be "sois (imperative mood for 'to be') mon amour / sois mienne". Hence the message certainly revolves about the same theme, even though it does not seems idiomatic in French.