No. You must not have sex with someone before you both know that you guys are in love. That's especially where young people get it wrong, the young ladies most times.

A guy will promise you anything - heaven and earth inclusive just to get into that "promised land". Once you have given him that leverage, trust me, he is at a liberty to do with you whatever he thinks right.

Love is mostly about friendships- caring for each other, looking out for one another, making sure that there is no issue and also helping out when an issue arises.

If one asks you thus if sex has to be involved in a relationship first before love can be certified, the answer is no. True love holds no bounds. True love does not need sex before it can be called true love.