For teens, marriage can create more problems than it solves with the expenses of rent, utilities, food medical bills, insurance, taxes, and clothing. It holds enormous obligations. It is not selfish. It is fulfilling the needs of another and finding enjoyment through giving, not just taking. There are different types of love.
Love involves friendship and affection.
The deepest love is that which is self-sacrificing. Clearly, it is often difficult to decide whether you are really in love. When you are experiencing such intense emotions for the first time, it is hard to be objective. It seems that lasting relationships come with emotional maturity, not with age, and that permanent relationships should be entered into wisely and carefully. The most important thing is that you handle serious relationships with the responsibility they require.