'agape' means unconditional love in Greek. If you are an active christian, you are living in agape through all the blessings and grace given you by Christ. No tatoo is needed; your name is engraved on His hand.[But the tat is great too!]
Unconditional love is loving someone even if you don't particularly like them. It does not mean unconditional trust or unconditionally accepting bad behaviour, a healthy mind will always place boundaries and rightly so. You are simply and purely loving someone with zero expectations. You are very lucky if someone loves you in this way. The notion that conditions A.B +C.. must be met to 'love' someone? think about that. Really think about it.