Gay or not gay?

1 Samuel 18
1   And it came to pass, when he had made an end of speaking unto Saul, that the soul of Jonathan was knit with the soul of David, and Jonathan loved him as his own soul.
2   And Saul took him that day, and would let him go no more home to his father's house.
3   Then Jonathan and David made a covenant, because he loved him as his own soul.
4   And Jonathan stripped himself of the robe that was upon him, and gave it to David, and his garments, even to his sword, and to his bow, and to his girdle.

Later on Saul gets a bit pissed about this "friendship" that his son is in.

30   Then Saul's anger was kindled against Jonathan, and he said unto him, Thou son of the perverse rebellious woman, do not I know that thou hast chosen the son of Jesse to thine own confusion, and unto the confusion of thy mother's nakedness?
31   For as long as the son of Jesse liveth upon the ground, thou shalt not be established, nor thy kingdom. Wherefore now send and fetch him unto me, for he shall surely die.

They even kiss at some point in there. Friends or Lovers?