Romans 5:5 (NASB):and hope does not disappoint, because the
love of God has been poured out within our hearts through the Holy Spirit who was given to us.
Here I think the idea is that we reflect the sacrificial love that God has for others. For example, one of the fruits of the Spirit is love.
Romans 5:8
But God demonstrates His own
love toward us, in that while we were yet sinners, Christ died for us.
Here I think God's love for fallen mankind is in view.
Romans 8:28
And we know that God causes all things to work together for good to those who
love God, to those who are called according to
His purpose.
Here I think our love from God is in view.
Romans 8:35
Who will separate us from the
love of Christ? Will tribulation, or distress, or persecution, or famine, or nakedness, or peril, or sword?
Here I think God's sacrificial love for His chosen ones is in view.
Romans 8:37
But in all these things we overwhelmingly conquer through Him who
loved us.
Again, God's sacrificial love for His chosen ones is in view.
Romans 8:39
nor height, nor depth, nor any other created thing, will be able to separate us from the
love of God, which is in Christ Jesus our Lord.
Again God's sacrificial love for His chosen ones is in view. Here also we see that God's love emanates from or through Jesus.
Romans 9:13
Just as it is written, “Jacob I
loved, but Esau I hated.”
Clearly God's love is in view.
Romans 12:9
Let love be without hypocrisy. Abhor what is evil; cling to what is good.
Per Mark's astute observation, the focus has shifted in general to how our love for God and others should reflect the attributes of God's love for mankind.
Romans 12:10
Be devoted to one another in brotherly
love; give preference to one another in honor;
Here even the word translated as "love" is not agapeo, but Philadelphia (sibling affection).
Romans 13:8
Owe nothing to anyone except to
love one another; for he who
loves his neighbor has fulfilled
the law.
Again, our love for others (saved or unsaved) is in view.
Romans 13:9
For this, “You shall not commit adultery, You shall not murder, You shall not steal, You shall not covet,” and if there is any other commandment, it is summed up in this saying, “You shall
love your neighbor as yourself.”
Our love should be focused outwardly, toward others, just as God's love was toward us.
Romans 13:10
Love does no wrong to a neighbor; therefore
love is the fulfillment of
the law.
Our compassionate love for others again is in view.
Romans 14:15
For if because of food your brother is hurt, you are no longer walking according to
love. Do not destroy with your food him for whom Christ died.
Here we see that our love for others includes restricting our own liberty of behavior for the sake of others.
Romans 15:30
Now I urge you, brethren, by our Lord Jesus Christ and by the
love of the Spirit, to strive together with me in your prayers to God for me,
Here, while the idea could be God's love, I think upon reflection, Mark is correct, our love toward others (including Paul) which is a fruit of the Spirit, is in view.