She's hot, with perfect hair, luminous skin and has a bubbly personality to boot. She's also your boyfriend's best female friend.

For 26-year-old Sophia, her two-year relationship with boyfriend and marketing executive Peter has been fraught with insecurity because of his best female friend.

She said: "They've known each other for ages and went through a lot together."

Peter insists that he has no romantic feelings for best friend Jaime, but Sophia does not feel reassured.

She recalled: "When we first got together, he was so anxious for us to meet. He called us 'the two most important women in his life. It got worse after we met."

Sophia just could not understand why Peter was dating her.

She also realised that Peter spent extra time with Jaime for every date they go on so "she wouldn't feel left out". And when they were out on dates, he would run errands for his best friend.

Is the girlfriend doomed to condone her boyfriend's relationship with his closest female friend, considering today's new openness towards close friendship with the opposite sex?

Counsellor Chong Cheh Hoon from non-profit organisation Focus on the Family believes it may be better for the friendship to end if it is threatening the couple's relationship.

But Cheh Hoon adds: "If that's too drastic, he should at least include Sophia in their activities."

Relationship coach Kloudiia Tay thinks that the best friends should "draw certain boundaries for the friendship and stick to them." Jamie needs to understand that she cannot monopolise Peter , while Peter should freely share with Sophia what goes on when he meets Jamie.

As for Sophia, Kloudiia feels that she should not be too suspicious of Peter's every move, or this will strain the relationship.

Check back here for the fourth instalment of "Meeting her best gay friend".

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